Its only redeeming feature over other quivers is the 5% defense it adds to the wearer. Thus why you see all sorts of non-archers running about with quivers on.
Me, I carry one in my pack, but I prefer a directed damage assault when in combat. Swapping between the poison/cold one and the fire one works for me most times. My archer's current defense isn't enough that a 5% increase will make a difference versus her hitting at the enemy's lowest defense resist.
Once the entire pvp world manages an all 70's suit.. then she probably will sport the quiver of infinity.
The quiver of the elements is nice, because you get that lower carry weight.. and some random other bonus that I've never had spelled out for me. *grin* I mean.. it has to do something, I have just never investigated what that something is!