I wear my leather jacket, over the ankle boots, gloves helmet all the time because of one reason. The street is much more likely a place for me to eat pavement or even worse get him by a car and I dont know about ya'll but i want all the protection I can get even if I have to sweat it out a bit. The street will probably be a harder impact at slower speeds were the track will high speed low impact were you slide a lot and leathers will take major heat and abuse. The street I wont be going as fast but fast enough I want as much gear as possible without being overkill, and besides most jeans can take some mild sliding.