Are there many guys using Dvorak? I only met one in my whole life.
Now you meet two.
The best hacker I ever knew used dvorak. He went off the grid to become a welder or something, but he was _fast_.
I use Dvorak. I never bothered to maintain the QWERTY keyboard for vim movement. Now, it seems completely natural to navigate with the Dvorak mappings for h,j,k,l, etc. I can't easily navigate one-handed, I guess, but that is never really a problem.
That article is probably doing more harm than good. Using Vim with Dvorak came as naturally as switching to Dvorak from QWERTY (that is, it took some work, but now I wouldn't use anything else).
Switched to vim and dvorak same day five years ago. Default mapping is very natural - left hand (qwerty "c" and "v") used for vertical movement, right hand (qwerty "j" and "p") for horizontal movement.