The thing focuses like crazy in low light - I'm primarily a nightclub/social photographer
1. Can you say anything about the af *precision* yet, not just the speed? And if you've got a 5d3 handy it would be interesting to compare the af speed/precision (center point, single point af) to the 6d, because that's what'll matter most to many people.
2. Did you try the non-center af points and are they really as crappy as the specs predict?
Lensrental did quick AF test: