One of the major problems I have with this whole concept is that while it might be technically possible within a few years you'd have some really expensive e-paper that would likely be very, very fragile. I've never read any technical papers on e-ink or similar designs that allow it to be durable enough to be that thin and handled by your average Joe.
This just seems the wrong direction IMO, but hey I'm no visionary.
I'd rather see more truly three dimensional interaction such as holographic displays. These aren't appropriate for everything, but for several applications they just make sense.