Shortly after upgrading from my old Canon 20D to a new Canon 7D, I flew to New York for business. My company let me fly in on Saturday instead of Sunday as the lower airfare offset the extra hotel day, enabling me to spend Saturday afternoon and evening getting to know the new camera. You can see some of the results here. This morning, I revised the treatment of one of the photos I posted that evening:
1/30 s, f/3.5, ISO 6400, 18mm
I think the Mark II could do even better. Whenever I'm able to travel to New York again, I'll re-shoot the scene.