This play through I'm looking at things in a bit more detail since I've played through several times before. When I first assembled the dragon armor (BP had the dragon heart), there was a sound, a note that something had changed, and a vibrating white icon over the breastplate in the character view. Also, all four stats were increased by 15. A little while later, I happened to be looking at the stats as they snapped back to normal. Before, I accepted that the boost was a one time event. Although it seems unlikely, I wonder if there is a way to get it back?