I haven't tried them as I have Draggin jeans that I wear along with a mesh jacket. I also have mesh pants and fabric pants but it's a bit much to put on all the time.
I admit that I don't feel as safe wearing the jeans as they don't offer as much impact protection but one has to choose a bearable comfort level or we would all be wearing full leather race suits on 100 degree weather
The Draggin jeans are not much warmer than regular jeans as the kevlar is very porous. The mesh jacket has padding in the back and elbows and my back can get a bit sweaty.