I have used both styles and prefer the 2 piece. I currently use an Alpine Soft-Loc 2 piece and it is quiet as can be. I leave my quiver on in stand (obviously)...it has never bothered me a bit to leave it on. Some say they remove theirs because it is "easier" and more convenient, but to me taking it off just creates one more piece of equipment to keep up with. If you need a follow up shot, your arrows are in a different place...

A 2 piece is far quieter...