I have to change my view on the bag. I still think it's a great bag, just not great for me. I own one, and still use it (because I paid lots of money for it).
My issues are, I have a massive torso, and extremely broad shoulders and a gut that could smother a toddler. The grip bag is a quality bag, but it sits weird on my back. It slides around awkwardly while walking. Also, in casual rounds when I throw multiple discs a lie, the rattling around is super annoying. I have no problems with the bag outside of my personal preference, other than sitting the bag down on awkward lies, it has a tendency to fall over or lean really bad. When it falls over it gets dirty, and then my shirt gets dirty unless I wipe it off, which usually takes 10-15 wipes to get it clean.
I would recommend this bag to smaller guys, but bigger guys I would not. After getting this bag, my back stopped hurting, so that's a good thing. Which is the reason I think I'm going to keep using it. Climbing hills and rough terrain is wonderful with this bag.