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.
I have very broad shoulders and a bigger built chest and I haven't experienced the problems you have as far as feeling strange on my back. Have you tried adjusting the shoulder straps to see if maybe a tighter fit could keep it from swinging on you? As far as it falling over, mine did that as well but I've kinda gotten the hang of the angle I have to set it down on when playing on hilly courses.
My wifes bag and mine! Mines the pink one! Lol We love them!!!
That blue and white bag is so sexy!