For what it's worth, my other project boat I opted for Awlgrip (sprayed on) when I did the "original" re-build and I have been extremly pleased with the result. I did have to go back and replace the transom (long story, lesson learned) last summer and rolled and tipped the Awlgrip which I was VERY surprised how easy it was and how well it came out.
But, I did not have to try to blend the repair since the repainting started at the transom corners. If I had I think I would have had trouble trying to blend the repair.