This looks like the backpack I got at an Army surplus store on the US Mainland when I was there for the last Health & Fitness Week. It looks like they don't have any in stock right now, but perhaps later. It's my favorite backpack to date, although I have to admit that I haven't put it into action yet so I don't know of it's quirks, if any.
I like the camo, that it seems to be a fairly natural material, the way it adjusts an feels when on, how my camping hammock and fleece sleeping bag fit inside it with room for clothes and other things, that there's a day pack that snaps right onto it, all the compartments and tie-ons and more! :) I attach the backpack on the back, but it's nice how I could put it on top too. I bet I could get another one too.. hmm... wonder if there are enough clips for that...
After I actually go hiking and camping with it I'll try to come back here and let you know how it went. And I'll see if there are enough clips for two day packs too.