I have been following that same thread for about a year now and decided to try it out...what the heck. My truck was a 20 footer...the old guy I bought it from painted over anything and there were runs, rust blisters, orange peel, dirt, so it was time. It is also a work truck, so I didn't want to freak when I scratched it hauling mulch or something.
The original thread was about Tremclad, the Canadian company owned by Rustoleum. It has since expanded to Rustoleum and a boat topside paint called Brightside..which is what I am using. By the way it is almost an exact match to my Windsor Blue.
I have done the front fenders with four coats...I am really happy with the way they came out. The cab and hood are in their primer now and they will be next. I will post some pictures a little later today.
Chuck