John, I shared your concern about applying Enduro poly over Arm-R-Seal. When I called GF several years back they said it was not a problem as long as the solvent finish was completely dry....they said 24-48 hours depending on temp. I've completed a number of projects with that schedule with no issues that I'm aware of. I think it's one of those things were the mfg's are covering their asses to avoid warranty problems with folks that don't allow the solvent to fully dry before top coating.
Scott Vroom
I started with absolutely nothing. Now, thanks to years of hard work, careful planning, and perseverance, I find I still have most of it left.