That's really interesting, and I confess that I myself didn't actually "get it" because I didn't recognize the potential to collapse the tablet and laptop into one. It seems obvious to me know, and I guess that's how MS was approaching the tablet 10yrs before others anyway.
I have an iPad and literally never use it, mainly because I hate typing on it and I rarely find myself having long sessions where I don't need to type something. So a solution that incorporated a physical keyboard, whether through a "folded" laptop or some docking method, might answer my needs. That said, I'd be concerned with the longevity of the moving pieces.
Looking forward to seeing what options there will be (I've seen some already).