I really like the tag line "People who use a keyboard are standing in the way of progress" OMG. Looks like fun though, and I bet it never gets crumbs lodged in the wheel!
I wouldn't want to take the time to write an email. I suppose it would be good for people that have difficulty typing...
I own several apple products and am happy with what has been offered.
I still think it looks like a big folding iPod.