Just another non name brand primer, the product sheet shows it to be usable over the standard surfaces and when mixed properly will also work as a filler or sealer. Looks like fairly hi solids, should make a good fill and prime, too.

Never heard of it or used it, no idea how the adhesion is, but if the product sheet is reliable it should be ok... Certainly not top of the line, but probably an acceptable primer for this application. I'm not near as fussy as the pro painters though, might want to wait for some of them to check in on it....