Preval paint sprayer, anybody tried one?

Technically it is an aerosol, just gives you the ability to mix your own paint. They spray good, but just like any other rattle can. A cheap hvlp can be made to work great, just takes practice. Fwiw you'll spend more on the preval cans than just paint and a paint gun. If you're worried about your compressor keeping up, just do one panel at a time.

Edit: sorry I didn't read your whole post, I'm sure you've got it covered.