Another Domke suggestion, but not for the bags themselves, is the padded inserts. I use several of these in a Domke Reporter's Satchel and nobody knows I have a camera in there, it looks like any old messenger bag. I'm on a college campus or around town most of the time, so it's not conspicuous. I agree that these days the canvas bag look has a certain "cachet" it didn't used to have... However, you could just as easily adapt these inserts to fit all sorts of nondescript bags other than the Domke ones.