[berlinbrown]

I think you can use both. As Clojure is more dynamic in nature where Scala/Haskell are good compiled static compliments.

Large projects, I would go with Scala/Haskell and for front-end systems, I would use clojure.

Why do it this way? With clojure, you can easily modify data or small pieces of logic. Simply edit the script without the recompile. With the scala/haskell api or library, you probably need something that changes less frequently. That backend system may act as a core piece of your library. ...

And if you don't like that. You can do Python and Java/C# which can give you the same effect.