The OP links to a post by Steve Losh[0] which suggests this:

Trust me, you want to learn to use hjkl. Playing a lot of Nethack[1][2] also helps.

[0] http://stevelosh.com/blog/2010/09/coming-home-to-vim/

[1] http://www.nethack.org/

[2] http://strategywiki.org/wiki/NetHack/Beginning#vi_keys