Correct, I've got Vintageous installed, which is a more feature-complete implementation of VIM's keybindings and its "ex" mode.
It's still not exactly the same as using pure VIM, since some of the commands overlap with Sublime commands, and I tend to use a hybrid of both (for instance, Sublime's Ctrl-D command to make multiple cursors, which is incredibly useful when I'm editing HTML and have to wrap several lines in anchor tags).
Going into "pure VIM" is just to make sure I don't get too reliant on Sublime niceties, particularly as my day job requires spending a great deal of time SSH'd into random RHEL/CentOS boxes.