I have mainly shot a Nikon D3 + 300 2.8 VR at last weekends F1 GP, but had a Leica M with me at all times with a shorter lens.
For the ones, who are curious, I have uploaded some shots from the weekend on my website in the galleries here.
More, more, more on my site ;-)
What really strikes me, is how detailed the crops from the M8.2 are.
Thanks for looking!