" From the WC guys I know a lot if not most lineages do not have chin na ( or at least don't emphasize it), a few do. But for the most part the WC guys I've trained with did not like most locks as they break WC principles, and those boys do like their principles."
"those boys do like their principles."
Indeed they do. If you go to a leung Ting school you will immediately notice the difference to a Sam kwouk school or a Gary Lam school.
They also change the name or put a prefix to differentiate the schools so you have Southern Mantis which is different from Northern mantis..but in Southern mantis you also have Iron Ox, Bamboo forest Mantis, also Ho sin's version of Bamboo forest where you don't practice the forms....it's much easier than saying " MY" Mantis because that doesn't really convey anything..even in Aikido there are different versions and they also give a name so you have Hombu Aikikai , Iwama RYu, Yoshinkan etc..........so you know what you are getting