Interesting effects and kind of dust put it would better with a left side different than the right one.
Stock version looks nice in color, pretty decent in B&W too, maybe lower saturation for the stocked color?
top one is nice but i think its sharpend way to much and it kinda ruins it, i had the same problem with my sig didnt get to fix it.If u learn how to do that let me know lol.Its looks COOL WITH the render but i think the blending was the best job co thesres way to much over him.