Marc is one of the main contributers to this forum: http://forums.getdpi.com/forum/showthread.php?t=12300
Not that anyone cares, but I would say that 99% of us wedding photographers here use either Canon or Nikon.
This also make sence, when you need to rent or borrow gear.
We do care.....that's why we're not using Canon or Nikon
Seriously though it really comes down to what you feel comfortable with and I guess a lot of us are after the AF Zeiss Optics. It just helps the fact that the A850 & a900 are quite good also.
A7II, FE 35, 55 C/Y 18, 28, 85, 100, 28-85
Marc used to shoot weddings with Nikon but after a full season using Sony he ditched his Nikon gear. He's not a guy who gives a damn what others are using, he uses the tool that he feels will get the job done.
α900+VG|F20|2xF58|16-35,24-70,135Z|STF|70-400G|50,85 1.4|16,20,28,100M,80-200APO f/2.8|28-135|500f/8|1x-3xMacro|2xMFC-1000|Tiltall+RRS, Bellows, etc.