Went to the Microsoft Device Night in Toronto yesterday. Tried the 950.
It feels good in the hand, but the design is pretty generic. Not in a bad way, you just don't notice it.
The camera seems pretty great. Low light performance was good, and detail even in a dimly lit room was quite good.
Performance was so so, but it's hard to tell with W10 still being buggy (apparently, there are still 2 more builds to go before it releases). Web browsing seemed fast.
Continuum is pretty crazy - with a mouse/kb attached, it really does feel like and perform like a PC. You could switch back and forth b/w Word and Excel by Alt-tabbing and it was almost instant. It was really impressive.