Hello hello, Wondering if anyone has, or has seen in person, any of these backpacks... ? http://www.tamrac.com/5577.htm I'm looking to buy the 7 series. Noone anywhere near here carries it, so I'm going to have to order it in or online. How is the build quality? Instead of a laptop in the rear section, could it hold maybe a text book and a thin binder? Does the 7 series look like a large backpack, or closer to a regular school size medium backpack? Any opinions on this pack, or cases in general, would be great.