I always keep safety first, and Mom was right next to him the entire time (thanks photoshop!)
Other sleeves and pockets should be ancillary to that core space
The Boosteady BackPack Strap Pouch is a good example of a proper strap pouch
Whats unique about the LoweProPro Tactic 450 AW II is the 4-way access you can grab your gear from the right, the left, the top and the back, allowing every access point to be opened quickly and easily
I manage to carry: a tent and poles, sleeping bag, thermarest, motorcycle tools, tire irons, food, clothes/rain gear, tripod, netbook, AC adapters/chargers, first aid kit