Any experience with Eastwood's Optiflow roll-on primer??

I've been happy with the Eastwood products I've used but why try a roll on primer if you're planning on spraying your car at some point? If you already have the equipment, just spray it. Epoxy is easy and simple to spray and it's difficult to make mistakes. Also doesn't have as much overspray as clear does. Don't really need a paint booth to spray it either.

You may wind up costing yourself time by having to sand out rock hard roller lines when the epoxy cures.