David, interesting point. Travel and walkabout candids are probably all I would use the D800 for. Did you use the crop on the D3x,D3S and D700? I've tried the 1.2 on the D3S and the Dx on the D700 but just could not get used to it (VF and framing), particularly on the D700.
Maybe I'm just too old to change or do I need to really work/practice on it Cheers, Tom