I use an Alpine Soft-loc quiver. Best I've found so far. I have the five arrow style, but only take 3 arrows with me. This allows me to spread them about farther and does not make any noise if I have to make a shot with the quiver on.

As far as a cover for the fletches and nocks. I never worried about. Deer are mostly color blind anyway and I don't think the bright nock is going to be the deciding factor if a deer spooks or not. Here is a recomendation though if you want to try the Sims cover. Get a spare mount for your quiver(whichever you choose) and mount it to your treestand in a way the the when you place your quiver in the block, the arrows are pointing down with the cover up. This way, water can't get into it and it should be easier to get another arrow out. Just a thought