Well a couple of things lads. The guy on ebay is wcfr4. Looks like legit surplus paint. Gonna try that out in near future.
Also, a buddy who was experimenting with this the other day, and so far the results look promising. If you can find any paint that will thin with lacquer, usually an enamel of some type, you can try mixing in a little hardener with it. He has tried a couple of types, and something like an epoxy hardener seems to actually work. Now I know all the experts will call bullshit on this but who knows. Will continue to experiment. It would be nice if you could take some good 'ol Rustoleum and turn it into something a bit more durable.