Well Tim, my buddy is an avid Nikon user. So, he'll mostly be commenting on the D800, while I'll stick with the 5D Mark III. However, we will be spending a lot of time with both cameras, so it should be interesting. We are already in agreement with some of the ergonomic decisions made in both bodies.
Anyways, we'll work on the initial review tomorrow, and then spend some time in the late afternoon and evening taking them out in the wild for some general street photography.