I have a 5th degree black in Kenpo, 4th in Hapkido, 4th in TenShin Aikido, black sash in Wing chun, and masters in Jeet Kune Do----and from what I can see watching these vids- this and the combo of Sobrevivincia principles-- is WAY more effective... and easier to MAKE WORK..... The only thing I'm waiting on is INCOME-- and I'm working on it. I've loved canes since Bat Masterson/and Barnabas Collins in the original Dark Shadows....and Sherlock Holmes in the Brett series....felt stupid carrying one- especially when I was younger- but now- after being mashed between two trucks in 99-- I NEED it... sometimes.