almighty_gir, you have to consider there are a lot of reasons for decisions like this. One example would be gbuffer channels. Colored specular vs Scalar is a matter of 2 additional channels.
Looks awesome man! Saw a video getting passed around a few days ago of this. Overall this looks killer. If I had to nitpick: The reflection on the metal rims of your barrels seems a little strong/smooth. Makes them look significantly cleaner and newer than everything else in here. I agree with PogoP a little bit on the…