My theory is: "If it works, don't fix it." The OEM molded rubber cam cover gasket is very good quality and should last a loooooong time. I don't see any need to peridoically replace it. I believe the reason mine started leaking was that is wasn't replaced when the head was removed for warranty work.
One thing that might be worthwhile is a check of the bolt torque after a few heat cycles, and, of course, you should use anti-seize compound on the threads.
The cover is coated with a thick polymer that provides acoustical attenuation of valvetrain noise. Over time the coating will blister and peel. Painting won't restore the cover's OEM appearance which is satin black, so the only way to keep it original looking is probably to buy a new one.