I really haven't noticed any real change in temps, but it has to help a little, allowing more air to flow over the top. Stop and go is still the same no difference to me. I did mine for looks, the Road Glide lines seem to match a whole lot better, it also made the seat feel tighter, almost like I am locked in, I really don't know if the bigger guys would like that or not..... you don't notice the seat as much when your feet are on the floor boards or pegs, but you do notice it at a stoplight when your feet are on the ground.
I like to tank so much, I'm going to do my Dyna Glide the same way.....