Showroom new eliminates the need for any kind of armorall type product. It makes the plastic and not shiny. Good stuff. Mud has no effect on it. Still nice and black.
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson
Gotta believe that if you don't treat it with a detailing product at least occasionally you'll need to do this again eventually though. But since it sounds like application is about the same as 2-3 coats of B2B / Armor All / TS-1 maybe preventative maintenance isn't worth it.