I have been using the Firstgear HT Air overpants for a couple years and even in hot weather they provide protection and are probably cooler than jeans. I have worn over shorts, jeans and dress slacks and as they have a liner you are even good going into known rain. Easy on and off too! Not Leather but give them a look! MUCH lower cost than any leather or a BMW version.
'03 Aprilia Capo
'00 1500 Intruder - gone but not forgotten
Looking for the next machine :<)