I've tried both ways. (Using Bulldog Adhesion promoter AND
sealer in one product. Never just with Adhesion promoter though.)
But to be honest, using Bulldog as a
sealer just straight up takes too much material.
And Bulldog isn't cheap.
In comparison two light mist coat of Adhesion promoter and a Good coat or two of
Sealer in my personal opinion Costs less. Or what littler more it does cost is so minuscule it's incalculable (With my system at least) I get about 4x the mileage out of my AP using it as a mist coat in comparison to a
sealer.
So I don't think anyone is saving ANYTHING doing it adhesion promoter only...
And I have personally seen the the adhesion promoter only not hold up as well.
So if you warranty your work, Even if just one out of fifteen come back. You're still probably on the loosing end of the deal instead of spending an extra couple bucks per repair.