I've used this stuff before. Seems to be holding up just fine so far but is nasty stuff to work with. It smells terrible, gets everywhere, and takes forever to dry completely. It says it dries to 24 or 48 hours or something but it still smelled after like 2 weeks. I also ended up hitting with several coats of brush on black paint and then several coats of clear. After all that it finally stopped smelling.
I would probably use it again though. Just make sure you have plenty of time before you need to use it.