My experience is similar to yours, except I am not looking for anything else. I switched to Dvorak 8 years ago and I haven't looked back since. My speed was lower and might still be but I don't care, typing is a delight and relative to the amount of time I spend on thinking and reasoning I think the overhead of any loss in typing speed is probably insignificant. Vim is the only keyboard control that matters to me anyway. (Though Vim is far from the only program I use.)

I feel it's important to mention that much of my love for Dvorak comes from the grid layout keyboard I've been using for all these years (wore one out though but bought a couple more to replace it), and which remains my primary keyboard both at home and at work.