It looks like it's going to be the best "attached" keyboard out there. The fact that it's made of aluminum means it will easily outlast your iPad. Makes me wonder if it has trouble with the difference in width between iPad 2 and iPad 3?
(and if you buy it now, will it work with iPad 4's as of yet unknown dimensions?)
I have been using the Incase Origami keyboard case and a standard Apple Bluetooth keyboard when I need to get serious writing done on my iPad. I've gone on a couple 7-10 day trips so far with that combo, and it's not let me down yet. The Origami case doesn't protect the iPad though, where the Brydge looks like it protects the fragile glass screen.