I still never tried one of those that came with a factory security door touch up kit, but no doubt you'd need to reduce it quite a bit. Then you gotta clean or dispose of it.
In my little bit of small area epoxy use, mixed epoxy did hold out in small container with a lid for a few days, but it needed a little reducer mixed in to act right, so I doubt it would stay very useable for long on a prevail. If you own a cheap touch up gun, could reduce the epoxy a bit & get a really nice smooth spray from it & be a hint easier to clean out.