Has anyone used the new etch primer for their paints? Sounds like it would work real well over POR15 paint or bare metal. Just trying to find out if anyone has tried it on POR15 yet.

It may be OK for bare metal but, if POR15 seals the metal like advertised, It would be absolute worthless over POR15. An etch primer has an acid add to etch the metal, prep the metal, and improve adhesion. None of this could be accomplished when sprayed over another coating.