I tried out the Vim mode, it's actually one of the better emulations I've seen. Still suffers from the fact that for someone used to Vim there will be some keys you use regularly that aren't yet part of the emulation. I lasted a few days, but turns out I'm happier with actual Vim.

A shame, as they claimed to fix some of this in the newer versions... but of course my 30 day trial has expired and their model means I can't try out the fixes to see if it's actually worth paying for now.