But for Haskell and Clojure development, it's hard to beat the tight integration features that Emacs provides (e.g. quickly piping your code or a single function to the REPL for testing). Vim is not designed for this; there are plugins available to approximate it, but it’s a bit hacky and nowhere close to Emacs).
Honestly, it's not hard to learn the basics of both. If you're accustomed to Vim commands, Emacs has `evil-mode`. There's also the slick `god-mode`, which is like Vim's Normal mode for Emacs.
Both tools are great in their own ways. Personally, I regularly use and love them both.
