Sure, suprise me. I'd really like to see a video of someone typing for an hour or two on an iPad without needing a chiropractor afterwards and in the end producing more text than he'd produce on a laptop or netbook with a stock text editor. If you have trouble focusing, maybe it's because your body is in an awkward posture.
I don't own an iPad, but even thinking about the angle, that I'd have to look at it from while it rests on my lap, hurts my neck.