I don't carry my camera around on the bike anymore. Maybe that'll change once I get a good camera backpack, but I hate having a sweaty back enough to never take it riding.
If I wanted to start carrying cameras around again on the bike, I'd get a medium Domke or something that fits perfectly inside a hard panier. It would fit lenses and even two bodies.
And more camera porn, plz. Rangefinders are the Yamaguchis of the camera world.