The nerd in me says "cool" but the practical guy in me says, "is this useful for anything?" all I can think of is how hard this will be to fit in...just about anything.
The display may be, but the boards, components, battery, case... for everything to be bendable or small enough to be in hinged sections, specially the battery, it would be much bulkier than it is showing.
That said, i will consider getting one instead of the regular candy bar format so that my butt looks better.
EDIT: Come to think of it, it would be kind of cool if you placed it screen-down, like the receiver on an old dial phone. Then just put a small readout on the back with a clock and notification LED.
I don't understand what you meant by that. It's going to take infinite space...