The bed liner coated 200 is cool. Granted I don't know if that was the best liner to choose for this application, I have seen Heeps that were sprayed with Line-X and the finish looked alot smoother.
It may not be the prettiest paint job but you have to consider the perks:
It doesn't chip, fade, scratch, need waxing, crack, you can use a pressure washer on it, and he will never have to worry about repainting it or the body rusting.
In my opinion, the perks far out weigh the rougher finish......assuming you offroad and get lots of pinstriping from branches on a regular paint job.
or you could just do it like ten years from now when your actual paint job that you paid like ten thousand dollars for needs to be repaired