Discovery of the Detail Map

I've been itching to learn about a slot in most game engines called the 'Detail Map', and to my pleasant surprise, it's really, really cool. It overlays a tilable texture map on your model which acts like a bump/specular map which seriously enhances the detail on your models (hence the term Detail Map). I used a simple tilable concrete texture for Scorch, and it turned out pretty good. UVs are apparently ignored, so it gets applied to the whole model. I'll need to dig deeper. Here's a comparison :