Interesting to see. The Vim people at work are constantly harrasing us two Emacs users, claiming that lisp is old and silly, and that vimscript is good. Maybe change is acoming.
I'm the author, I've been in love with Lisp for years now (I'm a recovering JavaScript programmer) but refuse to leave Vim, Vim Script is absolutely awful for anything more than simple option setting in my opinion. Hence this massive detour into writing a plugin / library / framework to allow me to write better plugins.
I just wanted best of all worlds: My favourite editor with my favourite syntax without sacrificing any performance. If anything, my dotfiles should be faster now since there's less VimL which is damn slow to execute. I haven't benchmarked it though.
The Clojure world in Vim is getting better and better too thanks to various projects. My attempt at that is https://github.com/Olical/conjure
We also have really good s-expression editing plugins! Come on in, the water is full of parens :D