It sounds funny today, but I remember people pay a lot of money to get pilots leather jackets and leather paints to ride on motobikes. That's true leather cut the wind very good. I still have leather pilot set, my father's gift, but never use paints.
If you look at this video from dog trials you'll see me in this pilot jacket I hunted in it sometimes and can't say something negative, besides the jacket was pretty heavy, but most important thing there is no blood spots left of good painted leather.
http://www.youtube.com/watch?v=-GZSLQfjC9Y

Geno.