AJ,
Don't have one, but a friend at work just got one. I was playing around with it some yesterday and asking him about it. As you mentioned there are a few things that concern me.
1. New OS with limited (at this time) applications written for it.
2. No ability to add a SD card (If memory serves me correctly there is 8GB of internal memory, but don't know how much of that is available for add-on programs).
3. The keyboard is really small and those of us w/fat fingers might find it difficult to use. (To his knowledge there is no on screen keyboard option).
Like us, this guy is a Palm enthusiast and has had several of them. Luckily Alltel/Verizon hasn't started carrying the Pre yet so I can hold out (let others beta test it) for awhile.

Ride Safe,
Fired00d
