Tailgate Bike Pad - any experience?

I have a friend who uses one and loves it. No damage thus far that I can see. He did have a concern about the bikes coming out or moving around on rough roads, so he runs a strap through the bikes to the tie down loops in the bed. I've been behind him on some pretty rough roads and haven't seen the bikes move or shift.

If you get one and have disc brakes, make sure you turn the bars so the brake rotor faces out. He did bend a rotor because he had it on with the rotor facing in.