I had trouble installing it, actually.. I couldn't seem to get the plugin to load the keybindings (LocalLeader never seemed to have got bound and the functions which were to get called werent defined..) :-(
Its a pity, because VimClojure looks damned sweet. Thankfully I did get VimClojures syntax highlighting to work.
I had the same issue at first. I did get it fixed eventually but I can't remember what I did. :-( Once you get it running though it offers syntax completion send-to-repl and most of the slime functionality without the need for screen. Very worth the effort setting it up.