Can epoxy primer be used over Rustoleum rattle can gloss black paint?

Not everyone is a proponent of gluing cars together and rustoleum roller paint jobs. Some of us have to stand behind our work and I just can't do that with a layer of "I don't really know what it is in the middle of it"

Solvents try and penetrate so I would not suggest putting an aggressive acid etch primer over an uncatalyzed paint. If it doesn't fry up, it's going to soften it. Even the etch prime manufacturers recommend abrading before application.

Some are happy taking shortcuts and passing off sub-standard work. I'm not that guy. A little upfront elbow grease will go a long way as opposed to spending more $$ "to try" more products to try to keep going in the wrong direction.