I use a Gregory palisade 80 for the times that I need to carry camer gear + camping gear. It has a great harness on it. It's much better than any photo backpack. I use Somme lens wraps to protect the camera heat I put in there.
Just an update... Both Kelty bags have arrived and I actually find the older style more comfortable... I could probably spend more time trying to adjust the newer bag to my liking but I don't need 2 bags so it is going back to ebags. I'm sticking with the older model that is still available for $40 in Cabela's "bargain cave".
Which highlights the other thing I hate about photo packs. That thing is $310? I didn't pay that much for the big red pack I'm wearing at the top of the page and my Deuter was about $110. I can buy alot of foam pads for the remaining $200.
