It's good to know that the screen is great for web browsing. Did you use PIE to browse or install Opera Mini/9.5/Skyfire for testing?
It would definitely be nice to have an accelerometer to switch to wide screen viewing without having to slide out the keyboard (I'm looking at you, AT&T Tilt), but I think the Xperia will also be able to do this without sliding out the keyboard.
How was the tactile feedback when you used it? I read in another review that it worked pretty well most of the time, but there were times where it didn't register.
Any chance of you sending me that test unit so I can check it out? I'm willing to send you a deposit!