Hellow fellow Hearthlings,
a backpack is something basically everyone is carrying all the time, I don't see a lot of people carry the quiver on its stead.
And why would you? It just looks nice and robbs you of valuable inventory sapce, especially since you can just carry more of them on your belt.
I thus propose there should be a benefit from wearing it instead of a backpack. Something like a buff to time between shots maybe, even though this would be historically and practially untrue, it would be nice to have an incentive to use it on the back apart from just the looks.