i have use quivers/pouches on my 10 rogue, 19 rogue, 29 rogue, 29 warrior and once 59 soon to be 69 twink rogue when i go into PVP. i would remove one bag and put a quiver in the slot.
a bonus is a bonus.
i put a post on wow forum asking if blizz is considering that warriors and rogues can use quivers too and that many players do. from recent notes i have seen, Blizz doesn't have a clue. they are removing quivers/pouches and only hunters are getting a speed bonus of i think 15%?
once again this effect helps hunters in 19 bracket because as of now, the bonus they see is 10%, after 3.10 they get another 5% boost