Interestingly about clojure it seems in large that it is in its infancy. Rich H defintiely has some big plans for the language. After watching Rich's talk on infoQ
http://www.infoq.com/interviews/hickey-clojure-protocols I am inspired and amazed to think about where clojure will be by 2.0 (Pods etc).
The clojure language seems clean and very easy to learn I don't find the prefix notation or brackets off putting, I must note though I have done a large chunk of HTDP on racket before reading about clojure.
All in all very exciting and very interesting.