Plenty of people on this forum carry lots of Camera equipment around.
As far a I can tell there are a couple of professional photographers who only get about by bike, usually xtracycles.

http://www.bikeforums.net/showthread...hlight=clients

P.S. I know nothing about cameras so don't even know if it's possible with the camera you have, but I like the idea of getting around by bike and I like photos so thought I'd share this.