File this under "Fun With Chemistry":
The VW Van was one of the first things built, and was sprayed with Vallejo rattle can semi gloss. It's still slightly tacky after a couple years, and dust sticks to it something awful. I don't recommend either it or their gloss spray can clear coats, they have apparently no real set drying time.
Secondly, after a couple years, the Tamiya Flat spray can flat coat is cracking some of the Tamiya Spray Can Flat Black sections. That's irking.