I only use SWYPE on my Droid X and it's one thing that does scare me about the i4. So much easier to swype across the keyboard then to try using my thumbs to type.
without a doubt. I find the iPad just a pain to type much of anything on(which is why I have a bluetooth keyboard for it). For the iPhone would like the option but don't see it happening and the reg keyboard works good enough.
the people that I know with droids are pretty freakin fast at moving their thumb though. I think its just a learned way to type the same as we had to learn when we gout our first iPhone.