I wrote a CSharpScriptBinding roughly equivalent to the PyBinding on CodePlex. It uses the C# script engine from http://www.csscript.net.
After I wrote it, I kind of decided it might not really be something good to use. Although it caches the compiled script code as an already compiled Assembly, my concern is that I will have one temporary Assembly created each time I use the binding. Will this add up to a problem in the future? If so, maybe there is a way in the C# script engine that I don't know about to optimize this further...? Any thoughts to confirm my suspicion that this was just a bad idea (but useful excersise in learning more about bindings and converters)?
Ask them if they use the DLR? Without it, I wouldn't trust it.