I got a lot out of Clojure koans, myself. Rich Hickey's talks are also phenomenal. I'm itching to take a crack at designing a service around Datomic.

Emacs Live is a pretty legit pre-baked environment for use with Clojure, and pretty sexy to boot, decent themes (but needs a Solarized one.) It's also preconfigured to play nice with lein via CIDER nrepl for that "live hacking" experience. There are still a few tricks, and it's a little heavy, but it's quite good for a packaged toolkit. I definitely feel the advantages over Vim, for Clojure at least.

Sadly, I too find myself unable to set aside the time I'd like to for Clojure.

Again, really enjoyed the article!