I really want to get into Clojure, but everything I've read suggests that I'll have to learn Emacs to do it. Does anyone think giving up Vim for a few months is worth it?
I still use exclusively Vim for all my clojure coding. I have Vim in one window (with VimClojure for syntax highlighting and some other features), a REPL in another (for quick experimenting), and my ant script in another for compiling and testing the whole thing. It's not as integrated as SLIME and emacs, but I don't feel like my tools are slowing me down significantly.
With Emacs(w/paredit)+SLIME you would be doing "interactive development" which is really a fundamentally different and better way of using Lisp. I cannot recommend it enough.