There was a little bit of texture on the surface of my shoes so I didn't rough it at all. There were some slick spots too. I'm not sure yet if I should have or not, guess I'll find out soon enough. Actually, I think it will probably stick pretty well because the shoes didn't have a shiny slick surface. I doubt if the paint would work very well on something like patent leather, though. Too glossy and slick.
Cold here today, high of 31*. Brrrrrrrrrrrrrrrrrrrrrrrrr