Well, it is true that it is a little harder to type with out a physical keyboard, but so what, this is something that can be learned in a matter of days at most. I have no probably operating the keyboard effectively, and I don't even own one of the devices. I just use a friends every once in awhile to see if I have changed my mind about getting one or not.
Basically what I am getting at is that the device is great as it is, there is no need to add weight or consume more space making it less slim that it is. Tough it out, anyone who is willing to use the thing will adjust to the learning curve of the keyboard rather quickly.