I'm pretty sure pepper spray beats "parkour battling" though 
actually parkour is a fantastic defense against pepper spray. (didn't run from cops me and a security buddy tested it) if you can get outside 20 feet or so without exposing your face (easy when running away) you'll get some crazy skin irritation but that's the worst of it. it's the taser you gotta watch out for. getting tased mid-kong is just bad news. (that we didn't test)
