I've never understood the desire to have specialized editors for a specific language. If you want to go to a full blown IDE thats one thing - Eclipse and Visual Studio are powerful tools - but if you want to _edit_ code efficiently I don't understand why you wouldn't learn one editor very well and use it for all languages.
I personally am a vim guy but emacs, textmate, whatever, would be fine and they all work with clojure, ruby, python, c, and whatever the language du jour is tomorrow too.
Not that this isn't cool and I don't fault them for scratching a personal itch - its just an itch I don't have.