The crumpler is very very tough, dont let the logo and the colours fool you. The fabric is so tough that it is fairly resistant to water. At 1000 denier (that's why it is rough-feeling), the bag can withstand scratches and tears.
It all boils down to your style of carrying. If you want the "cross-body" with secure hug of your body, whether you are running, walking, squatting, bending etc, then the crumpler is for you.
If you want a broader setup bag (the crumpler packs deep and flat), and waist belt design, with easier access to gear (assuming you are not using the shoulder bag that comes with it, i know i wont coz it looks flimsy) with a rain-coat cover, then the Orion AW is good.
Me, i will get a shoulder sling bag (e.g. Nova, Reporter etc), dont like waist belt, dont like cross-body, so shoulder bag for me. (the back packs are excellent for gear transport, and easier on the body for walks and treks than a shoulder sling bag)
These days, i see secondary school kids carrying the Crumpler, it seems to a be a fashion statement.. hehe..also, have seen many Crumpler imitations for less than hald the price.