I haven't found a touchscreen / keyboard combination that really works as well as physical keys, it never can. I could write multiple paragraphs on my blackberry accurately without ever looking down at the screen.

Combine that with keyboard shortcuts to open whatever app or use whatever function I liked made using a phone so much more streamlined, no opening the screen to see what apps are active and scrolling to the one you want or having to go to your list of apps and find what you need, just press the system button plus the assigned letter and I'm in the app I want.