I came to this conclusion. Sling Backpacks are tactical, good for concealed carry, and are not expensive (about $20). Why settle for the expensive packs like Maxpedition when you can get a simple pack for cheaper. You can slip the pack from behind you to the front and take a concealed weapon out for defense. It's highly discreet, because just about anybody would have a backpack (like students). You can keep waters and stuff in it, and it's fairly light weight. It's good for anything but extreme outdoorsy stuff. It's perhaps good for hiking situations. I'm not trying to promote to buy this, but I'm saying that I was excited to find out how tactical this is without paying out of the pocket too much for it. I was actually really wondering what everybody else thought? I'd love to hear what ya'll suggestions are. I noticed that in the new upcoming video game, "Splinter Cell: Conviction" that the character Sam Fisher uses a sling backpack.