flyonline,....If you are talking about the fletch cover on the bow quiver....no, they don't slide up and down easy, or at all stalking....
And no, they don't mash your feathers unless you leave them covered for long periods of time.
When I put my bow back in my truck, or get back to camp, I put bottom limb up and pull down the cover.
Don't need to worry about stalking, sounds like you stalk this stuff like I do, and the bow quiver and fletch combo has been my choice for arrow transport for over 20 years.