Sayoc Kali got a really big profile boost when the american chief instructors got involved with training Benicio Del Toro and Tommy Lee Jones for the film 'The Hunted' (it was a sort of update on First Blood, but with loads of CQC instead of explosions). they took that exposure and ran with it; and i have to say that my initial investigation into filipino arts was inspired by the concepts portrayed in the movie. As it happened there was no Sayoc in my area, but we did have Doce Pares, so I went with that and it proved to be a good move. sayoc as a style of kali/escrima is not inherently 'tougher' than any other, indeed, much of the technique will be very similar to the many other family variations of FMA available, and will also be part and parcel of what the Dog Bro's do. The big difference is that the Dog Bro's encourage controlled full force work to help you seperate what is good in reality from what is good in theory.