It grows on you (the TP)
I can still remember hating the mogul for the first month after it replaced my Apache.
I'm thinking the TP is the same. First thing you need to unlearn is the pathological need to close every app when you are done. Oddly enough, its way faster to leave mail and opera and any other app you use more then a couple times a day open.
Then there's the whole "WTF are the BUTTONS" thing. The mogul one handed meant everything had a button. The TP means putting your finger right on the screen. Yes, you need to touch it. Go ahead, touch it!
For me, week 3 just starting, it's beginning to feel like a phone I will like.
And the battery life still sucks. Although if you don't use it at all standby time is pretty good. I've been busy today, no playing with it, and its just burning 2%/hour like it should.
I think if I had to use my mogul now, it would be very hard to use.