|I have done the 2 cameras w/ different lenses. its ok, but I always am afraid of banging into things w/ the camera thats not being used.
I don't like carrying lenses in pockets at weddings because Im wearing a suit and it looks funny and ruins the suit. Also, the 85 1.2L is a beast.
I like the belt idea because it shrinks your profile, everything is at your fingertips and as long as it doesn't sag, it supports the weight nicely for all day shooting events. The guy that I saw using it had everything on it, more loaded than I would use and I think a bit of overkill for shooting a concert, but he was cruising around with no problems, squating down, climbing on chairs etc...
It does look like a batman belt which obviously makes it even cooler looking.