There really shouldn't be any problems with chubby fingers - I have them (and mighty long fingernails), too, and I have no problems writing. Not even with the top row, which was my biggest concern because of it's close proximity to the screen.

Also, it' still a perfectly fine QWERTY (well, QWERTZ in my case ), only the special characters, numbers and the spacebare have been repositioned. I'm already used to only using the right thumb for hitting the spacebar, so that wasn't much of a problem for me, but it might be for someone who's normally using both thumbs for inserting spaces.

I'm still using the onscreen keyboard most of the time (and that's what I was writing that last post with), but that's mostly because right now I spend most of the time on the N900 modifying it, and one of the drawbacks of the hardware keyboard is the limited number of keys. I dearly miss my greater-than and lesser-than keys and the most beautiful round and-sign...

(Yet for normal use it's more than enough. I can't tell what special characters are included with non-German keyboards, but all in all there should be 25 of them.)

Another small drawback is that half of the screen of course is hanging free when the hardware keyboard is open, so I'm a bit cautious when tapping that part. That might just be me, though, as it seems to be rather stable - nothing is moving when I put some pressure on the upper border around the screen.

Well this post was written with the hardware keyboard this time, and I think I was actually typing a bit faster. Still far from the usual a-sentence-a-second on a real keyboard, though.