I use Vim with Dvorak. No remapping required. The keys are just in different places than on Qwerty.
Right, but having hjkl sit consecutively is sort of like wasd moves where you don't have to think about the key you pressed, only about the shape. But I guess it's just how you choose to build your muscle memory model.
I learned Vim after switching to Dvorak, so the Dvorak positions of hjkl are what I'm used to. I don't have to think about the key I pressed.