Is Pai Lum Tao - Gong Yuen Chuan Fa, Kung Fu real and useful in self defense? Is Pai Lum Tai Chi real Tai Chi?

I have studied Chen Tai Chi, and Long Fist Kung Fu in the past, and want to get back into martial arts. There is a school near me of Pai Lum. Is Pai Lum Tao - Gong Yuen Chuan Fa, Kung Fu real and useful in self defense? Is Pai Lum Tai Chi real Tai Chi, and useful?