I got a full HD cover a couple months ago. My bike is also vivid black, softest paint ever, PIA. I have not experienced any scratching or marring since using the cover though. I bought the cover used and when I got it I wiped it down with Optimum No Rinse mixed to a QD ratio. I took no chances in assuming it was clean. My bike is coated with Polish Angel Cosmic which isn't "Scratch Resistant" but it is harder then any wax or sealant, and for that matter the butter soft clear they put on the vivid black
If the inside of the cover is clean and the paint is clean then putting the cover on and taking it off is what is causing the marring. I usually have my girl help take the over off that way I'm not dragging it across the paint. After all the time polishing it out and applying Cosmic I want to avoid polishing again for a while
2009 Road Glide. 16 in Vindikta Wild Cats. Aquatic AV, Stinger 700X4 to MMatts, Audiopipe horns.
6900pros in the lids w/ sspn.4 1000d, tuned with DD Audio DSI-2. S&S 106, lifters, push rods and AC. Drago 2. CycleRama 575. Progressive monotones -1in. 12in. HD adjustable rear shocks. Painted inner fairing. Tuned with TTS. Blacked out!