I agree one the keyboard issue. Even the Palm Pre does not have a full keyboard (I assume those keys are tiny, too), so not having experienced that kind of keyboard before, I wonder how much easier to use than the iPhone keyboard it would really be. I am willing to believe that it is a little bit easier, but neither solution would be convenient for writing a novel or something.
The price for the keyboard is high, though: extreme ugliness! The sliding parts thing alone is awful. Even without that, I would expect a keyboard to be prone to getting dirty, and being more brittle than just a flat, solid, iPhone-like brick.
