Just like all quivers with plastic as divider. And like Marcus26 said, get some felt, rubber pad or door insulation foam and you can quiet it down quite a bit.
too short for long arrows.
Nope. Better yet, I think this quiver would be better for longer arrows because off the angle. You just have to get used to not having your nocks in sight.
In the pictures provided by OskarsL, he has the arrows in the leftmost divider, where you normally put them. If you put the arrows in the rightmost divider, with a near empty quiver they
can slant rearward, which would put them near the angle a target quiver would be, only facing backwards. In competition I don't carry more than 4 arrows, and they go in the rightmost 2 dividers, never had a problem.