I have been reading as much as I can about medium format and weddings....
There is one photographer I simply love... abyranphoto.com
He uses both the "2.8 F PLANAR (BAYONET III) TWIN LENS REFLEX" and the RZ67....
Do you know WHY one would take both to a wedding and when would you use one over another??
Perhaps the Rollei is more "walk around friendly" or its the Carl Zeiss lens he used?
Your insight is valuable.