I got to check out the 6D @ Photoplus as well, and my findings are largely in step with most of the above.
I didn't really get to put it through its paces because I could only go on Saturday and the CPS Lounge was closed (open for clean and check pickups only), but they had a couple out on the floor. I didn't even bother with the other focal points - though I was interested in how exactly they planned on running 11 AF points as a design.
From what I saw, focus was a bit quicker than the 5D2 and seemed to hunt less in sub-par lighting conditions. There was no card in the body (taped over too, as expected); I would have hoped they would have left a card in so we could at least review the images we took (even if only on the LCD screen on the back).
In my opinion, the jury is definitely still out. I still believe this could outperform the 5D2 in many regards, but I think it should have been introduced at under $2000 personally (not because I'm notoriously cheap, which isn't the case, I assure you, but because Canon isn't going to have a hard time unloading the last of their 5D2s and they won't be in direct competition with themselves; if anything, leaving this priced closer to the price of the 5D2 may help them move the last of their product. By pricing it a few hundred dollars above rebates, I think they're going to run into people that will simply wait for the price to naturally turn downward after release, however long that may take.