I think it is worth learning both. Clojure is more "practical" in the sense that it is dynamic, impure and gives you access to the huge JVM library ecosystem, w

I think it is worth learning both. Clojure is more "practical" in the sense that it is dynamic, impure and gives you access to the huge JVM library ecosystem, which is a huge advantage for real world projects. Haskell is pure and extremely elegant in an almost mathematical sense - if you want to learn the "true essence" of functional programming then it is ideal. Overall, Clojure is my favourite because of the practicality and the fact that it is compelling for other reasons (Lisp-style metaprogramming, interactive REPL development, code-as-data philosophy, concurrency features etc.)