[wonderzombie]

You're mostly right re: knowledge transfer, although it's really as simple as you imply.

First, Vim emulation widgets vary a great deal in quality, supporting different, disjoint subsets of Vim functionality. Just as an example, ideaVim doesn't support Ctrl-W for navigating between panes. The deeper your knowledge of Vim, the more diminishing returns you get.

Second, Sublime Text's Vintage mode supports enough of my Vim workflow that it's actually made me faster with Vim and other Vim emulation widgets. To the extent that any Vim emulation mode overlaps with Vim, I have improved across the board. Of course this is true mostly for the less deep features IME.