I think evil mode in emacs is probably the best bet. However I've messed around with elisp a bit in the past though and I can't say I am thrilled enough with it to make the jump. I wish one of the projects to get Emacs going with a scheme would get off the ground...

If mzscheme/racket scripting support for Vim were given the love that python support is getting instead, that would please me immensely. It seems nobody is using that though.