I used to attend open workouts in the 80's where Jon spared with karate/kung fu students. If I hadn't seen his sifu perform before I probably would never have thought mantis effective. Go to the Traditional Kung Fu Training Center - T.C. Mantis school in Surrey. #116 12465 82nd Ave. Surrey, B.C. Canada V3W 3E8 Looks alot more legit!
R