Some other interesting questions:

- what happens if you spill stuff in it?
- can you pop off the keycaps to clean out hair and the other gunk that get into every keyboard?
- did they get the key feel right?
- how will these things hold up over time?

Personally, I'm a big fan of my Kinesis Contoured keyboard. It's just far more comfortable for typing than most anything else I've tried. The only place where it's not really up to snuff are games, Photoshop, and places where the application is assuming you've got one hand on the mouse and the other on the keyboard.