
I have what I feel is a perfect setup.. I own a LowePro DryZone Rover, which has a removable lower-padded section (which can hold my 5D+Grip w/24-70 attached, a 1.4x TC, 135mm f/2 and 16-35 f/2.8 ). Stick that inside of a Chrome messenger bag and you have a system that is perfect for hard biking and very little swaying of the bag on your back, and the quickness of the release mechanism on the Chrome bag allows for accessing the gear in a few seconds. Granted, you are buying two bags to do this, but the DryZone Rover is pretty fantastic in its own right for day-hikes and the like. What i like the best is that a Chrome bag does not look like something that is holding multiple-thousands of dollars worth of equipent. As a bonus, you can detach the waterproof portion of the Rover and stick that into a much larger hiking backpack for long journeys. I suppose you can buy inserts and stick that into the Chrome messenger bag (which itself is largely waterproof)
Unique solution! More expensive, of course, but then again, photography is quite the expensive hobby...
So just to get this straight, you only put the pouch from the DryRover into the Chrome bag, not the entire backpack, correct? This might be similar to buying a Crumpler photo bucket for my current Crumpler bag.