Having laid up carbon fiber . . . respect. And keeping the natural epoxy finish is good industrial design, not to mention opening a whole new au-natural style for tablets. I want this with <favorite-OS> on board.
If 1.5kg and 2 hours battery life is acceptable, just buy a tc1100. It's industrial design of a different philosophy, but on a part with Apple. The form factor is from 2001, and is still competitive. Oh, and you'd have to use a stylus.