I'll let everyone know how the mask-and-paint-on-vehicle process goes for anyone pondering a cleanup of their mouldings. I think it will turn out really well. The only real issues are finding fender pads to replace the originals (as I believe they should be pulled and replaced to properly mask between the fender and body on the vehicle. You don't want to paint or clear over these - mine were falling apart anyway), and possibly replacing any mouldings that have broken or are loose. I had one rear flare that had to be replaced because the mounts had all broken and we couldnt get it reattached snugly. The shop was able to find 1 of 6 OE flares left in the country (according to them), and it was not cheap; but like @mtkreitz, I really want to maintain much of the factory aesthetic so I'm trying my best to find the parts.