I quite understand. I have a pair of little hams myself.
It is not fixed. I found that out during the HB bar fiasco too. I couldn't get the rubber bumper to move up or down on the brake line. When I rotated it though it gave way and then could slide up and down the brake line to the limits of the protective cover. I don't think it was originally attached from the factory but just the two rubber items (hose and bumper) stuck together with heat and time.
Great. Good to know. Tonight I'm going to tear back into that area and break it free. I'd feel much better with the clip rotated back down closer to its original position. I fought that dang grommet last night and could not get it loose. I'll try it again. Appreciate the comment.