Those Pre keys are way too tiny. I didn't like how it felt after using it for a little bit, and I don't think I'd like it for a long time. I'm really glad Apple went the software keyboard route. It was definitely a smart idea (and it's much easier to type with, too, I feel).
The G1 keyboard is pretty good. Given the amount of money I'm saving, and the fact that I can send emails twice as fast, I'm quite happy to put up with the little inferiorities.