hey josh
if you want to use it as a camera bag and a normal going out bag, get the seedy three or anything in their messenger bags range, then get a bunion insert.
the camera dedicated bags have paddings that are not removable.
the backpack is HEAVY, carrying the backpack alone is quite tiring for a day out. trust me i own the bag. and what's more, i only use a sony 717, and carrying it with a metz flash walking around is pretty tiring on the shoulders already.. imagine if there was a full dSLR set up inside, it would be pretty hell. add a laptop and it's worse.
the only solution to this is to carry it higher and of course use the chest strap to lessen some of the weight. but i'm usually not trekking around so i don't use the chest strap (coz it'll make me look like an idiot walking down orchard road like i'm walking a mountain range). but if you're going trekking or something it's a good bag coz it got lots of space for you to put almost anything you want.
hope this helps.