I like the horizontal there is less chance of you dumping a guppy open while your running around I also like the fack that after you use the guppy there is somewhere to pu it back into the 3.2 I could get the guppy out but puttin it back was to difficult in a game
Weaknesses:
it can sag after awhile like in a 10hr game i had to keep takin it off and reset it so suspenders help
Conclusion:
I am happy with my choice have never wanted for paint in a shootout. and the tank being off my gun has mad it at least 2lbs lighter