No doubt there are other solutions to dealing with rust rather than POR15 type products. The question is who has used it and does it work. When you say "rust never sleeps..and coverig it up isnt going to stop it or solve anything" is this based on using rust resistant paint or just nay saying?
I use a rust converter in areas i can't grind or s****e then hammerite --way cheaper and great product--- i brush it on and like por15 it dries w/out brush marks--my trailer fenders were rusted and ragged welded them up and wire brushed them, then brushed on hammerite--still looked good three years later when my trailer was stolen
I like the Master Series, Used it 20 years ago on 41 Chevy pick up frame and inside the doors and cab. its all still there.