I've been at this a long time....since the mid 50's anyway. I've probably used or owned every quiver out there...including several I have made myself. After all the good hype on this site I decided to get one and try it....figured if I didn't like it I could always sell it. Well, being one who does not like having arrows hanging from my bow I have to say that it is probably the best hunting quiver I have ever used. The only recommendation I have for improving it would be to find a better rubber for the bhs. I literally use mine almost every day for a three month season and it did not take long for the rubber where my primary arrow goes to wear away. I will replace it after the season, but aside from that small change it has become my primary, actually the only quiver, I take in the woods.
Regarding your initial question about noise, when wearing it and walking it is very quiet....no more noise than any other I have ever used....even the Catquiver. It took a little experimenting to find the best location to hang it when in a tree stand....if you hang it too low, at least for me, getting a second arrow out can be awkward. It just so happens I missed a shot two weeks ago and getting the second arrow out was troublesome, but that was because of the placement of the quiver, not how it functions. Otherwise, arrow removal is very silent and because you are essentially reaching behind you to get at an arrow movement of your arm is minimal....quite different than a bow quiver where it "all hangs out", if you get my meaning. I especially like it when wearing a pack. We walk in a quarter mile or canoe in to our property and the quiver just sits on my right shoulder and the belt clip keeps it where I want it without changing arrow removal.