I think it is a trademark now they are also associated with escrima..... I went to one of their schools once (I was more interested in practicing escrima), the atmosphere wasn't, in my opinion very good, a lot of ego in the air and the instructor claimed their style was the best, that their escrima could also beat any other filipino martial art and so on......
Haha.... I didn't tell them I already practiced filipino martial art (for two years)....
we did an exercise where the student was supposed to defend with a stick against the instructor who hold two swords....
I was new there and didn't know I shouldn't attack but just defend so when I felt the instructor was about to strike I hit him with my stick on both sabers (he was on the point of delivering a double attack and hold them close together)..... the unthinkable happened
: he dropped both blades on the floor to my surprise....
I didn't come back......