Anyone ever use either one? I had a couple of buddies that wore them last year and say they are the shiz. I was just wondering if anyone here had any thoughts before I go buy one for the up and coming season. Seems like a really good idea, no pack sticking out and catching branches and all the weight is distributed rather than just on your back. Link in case someone doesnt know about them yet. http://ogio.com/products.php?category=35