diff --git a/soroban-sdk/src/address.rs b/soroban-sdk/src/address.rs
index 46196c7f..ec1fda0e 100644
--- a/soroban-sdk/src/address.rs
+++ b/soroban-sdk/src/address.rs
@@ -124,18 +124,21 @@ impl TryFromVal<Env, &Address> for Val {
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<&Address> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &Address) -> Result<Self, ConversionError> {
-        Ok(ScVal::try_from_val(&v.env, &v.obj.to_val())?)
+impl From<&Address> for ScVal {
+    fn from(v: &Address) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
+        ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<Address> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: Address) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl From<Address> for ScVal {
+    fn from(v: Address) -> Self {
+        (&v).into()
     }
 }
 
@@ -152,21 +155,19 @@ impl TryFromVal<Env, ScVal> for Address {
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<&Address> for ScAddress {
-    type Error = ConversionError;
-    fn try_from(v: &Address) -> Result<Self, Self::Error> {
-        match ScVal::try_from_val(&v.env, &v.obj.to_val())? {
-            ScVal::Address(a) => Ok(a),
-            _ => Err(ConversionError),
+impl From<&Address> for ScAddress {
+    fn from(v: &Address) -> Self {
+        match ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap() {
+            ScVal::Address(a) => a,
+            _ => panic!("expected ScVal::Address"),
         }
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<Address> for ScAddress {
-    type Error = ConversionError;
-    fn try_from(v: Address) -> Result<Self, Self::Error> {
-        (&v).try_into()
+impl From<Address> for ScAddress {
+    fn from(v: Address) -> Self {
+        (&v).into()
     }
 }
 
diff --git a/soroban-sdk/src/bytes.rs b/soroban-sdk/src/bytes.rs
index 1605341b..b654d66a 100644
--- a/soroban-sdk/src/bytes.rs
+++ b/soroban-sdk/src/bytes.rs
@@ -232,18 +232,21 @@ impl From<&Bytes> for Bytes {
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<&Bytes> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &Bytes) -> Result<Self, ConversionError> {
-        Ok(ScVal::try_from_val(&v.env, &v.obj.to_val())?)
+impl From<&Bytes> for ScVal {
+    fn from(v: &Bytes) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
+        ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<Bytes> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: Bytes) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl From<Bytes> for ScVal {
+    fn from(v: Bytes) -> Self {
+        (&v).into()
     }
 }
 
diff --git a/soroban-sdk/src/map.rs b/soroban-sdk/src/map.rs
index cf0f3877..05582a77 100644
--- a/soroban-sdk/src/map.rs
+++ b/soroban-sdk/src/map.rs
@@ -225,18 +225,21 @@ where
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<K, V> TryFrom<&Map<K, V>> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &Map<K, V>) -> Result<Self, ConversionError> {
-        Ok(ScVal::try_from_val(&v.env, &v.obj.to_val())?)
+impl<K, V> From<&Map<K, V>> for ScVal {
+    fn from(v: &Map<K, V>) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
+        ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<K, V> TryFrom<Map<K, V>> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: Map<K, V>) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl<K, V> From<Map<K, V>> for ScVal {
+    fn from(v: Map<K, V>) -> Self {
+        (&v).into()
     }
 }
 
@@ -244,7 +247,7 @@ impl<K, V> TryFrom<Map<K, V>> for ScVal {
 impl<K, V> TryFromVal<Env, Map<K, V>> for ScVal {
     type Error = ConversionError;
     fn try_from_val(_e: &Env, v: &Map<K, V>) -> Result<Self, ConversionError> {
-        v.try_into()
+        Ok(v.into())
     }
 }
 
diff --git a/soroban-sdk/src/num.rs b/soroban-sdk/src/num.rs
index 1071943e..d3f69cbd 100644
--- a/soroban-sdk/src/num.rs
+++ b/soroban-sdk/src/num.rs
@@ -89,22 +89,25 @@ macro_rules! impl_num_wrapping_val_type {
         }
 
         #[cfg(not(target_family = "wasm"))]
-        impl TryFrom<&$wrapper> for ScVal {
-            type Error = ConversionError;
-            fn try_from(v: &$wrapper) -> Result<Self, ConversionError> {
+        impl From<&$wrapper> for ScVal {
+            fn from(v: &$wrapper) -> Self {
+                // This conversion occurs only in test utilities, and theoretically all
+                // values should convert to an ScVal because the Env won't let the host
+                // type to exist otherwise, unwrapping. Even if there are edge cases
+                // that don't, this is a trade off for a better test developer
+                // experience.
                 if let Ok(ss) = <$small>::try_from(v.val) {
-                    ScVal::try_from(ss)
+                    ScVal::try_from(ss).unwrap()
                 } else {
-                    Ok(ScVal::try_from_val(&v.env, &v.to_val())?)
+                    ScVal::try_from_val(&v.env, &v.to_val()).unwrap()
                 }
             }
         }
 
         #[cfg(not(target_family = "wasm"))]
-        impl TryFrom<$wrapper> for ScVal {
-            type Error = ConversionError;
-            fn try_from(v: $wrapper) -> Result<Self, ConversionError> {
-                (&v).try_into()
+        impl From<$wrapper> for ScVal {
+            fn from(v: $wrapper) -> Self {
+                (&v).into()
             }
         }
 
diff --git a/soroban-sdk/src/string.rs b/soroban-sdk/src/string.rs
index 1c48ecb3..67162486 100644
--- a/soroban-sdk/src/string.rs
+++ b/soroban-sdk/src/string.rs
@@ -137,18 +137,21 @@ impl From<&String> for String {
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<&String> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &String) -> Result<Self, ConversionError> {
-        Ok(ScVal::try_from_val(&v.env, &v.obj.to_val())?)
+impl From<&String> for ScVal {
+    fn from(v: &String) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
+        ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<String> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: String) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl From<String> for ScVal {
+    fn from(v: String) -> Self {
+        (&v).into()
     }
 }
 
diff --git a/soroban-sdk/src/symbol.rs b/soroban-sdk/src/symbol.rs
index 7f11fd3b..6389d382 100644
--- a/soroban-sdk/src/symbol.rs
+++ b/soroban-sdk/src/symbol.rs
@@ -136,23 +136,26 @@ impl TryFromVal<Env, &str> for Symbol {
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<&Symbol> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &Symbol) -> Result<Self, ConversionError> {
+impl From<&Symbol> for ScVal {
+    fn from(v: &Symbol) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
         if let Ok(ss) = SymbolSmall::try_from(v.val) {
-            Ok(ScVal::try_from(ss)?)
+            ScVal::try_from(ss).unwrap()
         } else {
-            let e: Env = v.env.clone().try_into()?;
-            Ok(ScVal::try_from_val(&e, &v.to_val())?)
+            let e: Env = v.env.clone().try_into().unwrap();
+            ScVal::try_from_val(&e, &v.to_val()).unwrap()
         }
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl TryFrom<Symbol> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: Symbol) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl From<Symbol> for ScVal {
+    fn from(v: Symbol) -> Self {
+        (&v).into()
     }
 }
 
@@ -160,7 +163,7 @@ impl TryFrom<Symbol> for ScVal {
 impl TryFromVal<Env, Symbol> for ScVal {
     type Error = ConversionError;
     fn try_from_val(_e: &Env, v: &Symbol) -> Result<Self, ConversionError> {
-        v.try_into()
+        Ok(v.into())
     }
 }
 
diff --git a/soroban-sdk/src/vec.rs b/soroban-sdk/src/vec.rs
index 46f66bc9..d7ae8eef 100644
--- a/soroban-sdk/src/vec.rs
+++ b/soroban-sdk/src/vec.rs
@@ -231,46 +231,46 @@ where
 use super::xdr::{ScVal, ScVec, VecM};
 
 #[cfg(not(target_family = "wasm"))]
-impl<T> TryFrom<&Vec<T>> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: &Vec<T>) -> Result<Self, ConversionError> {
-        Ok(ScVal::try_from_val(&v.env, &v.obj.to_val())?)
+impl<T> From<&Vec<T>> for ScVal {
+    fn from(v: &Vec<T>) -> Self {
+        // This conversion occurs only in test utilities, and theoretically all
+        // values should convert to an ScVal because the Env won't let the host
+        // type to exist otherwise, unwrapping. Even if there are edge cases
+        // that don't, this is a trade off for a better test developer
+        // experience.
+        ScVal::try_from_val(&v.env, &v.obj.to_val()).unwrap()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<T> TryFrom<&Vec<T>> for ScVec {
-    type Error = ConversionError;
-    fn try_from(v: &Vec<T>) -> Result<Self, ConversionError> {
-        if let ScVal::Vec(Some(vec)) = ScVal::try_from(v)? {
-            Ok(vec)
+impl<T> From<&Vec<T>> for ScVec {
+    fn from(v: &Vec<T>) -> Self {
+        if let ScVal::Vec(Some(vec)) = ScVal::try_from(v).unwrap() {
+            vec
         } else {
-            Err(ConversionError)
+            panic!("expected ScVec")
         }
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<T> TryFrom<Vec<T>> for VecM<ScVal> {
-    type Error = ConversionError;
-    fn try_from(v: Vec<T>) -> Result<Self, ConversionError> {
-        Ok(ScVec::try_from(v)?.0)
+impl<T> From<Vec<T>> for VecM<ScVal> {
+    fn from(v: Vec<T>) -> Self {
+        ScVec::from(v).0
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<T> TryFrom<Vec<T>> for ScVal {
-    type Error = ConversionError;
-    fn try_from(v: Vec<T>) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl<T> From<Vec<T>> for ScVal {
+    fn from(v: Vec<T>) -> Self {
+        (&v).into()
     }
 }
 
 #[cfg(not(target_family = "wasm"))]
-impl<T> TryFrom<Vec<T>> for ScVec {
-    type Error = ConversionError;
-    fn try_from(v: Vec<T>) -> Result<Self, ConversionError> {
-        (&v).try_into()
+impl<T> From<Vec<T>> for ScVec {
+    fn from(v: Vec<T>) -> Self {
+        (&v).into()
     }
 }