There is Jook Lum, Chow Gar, Chu Gar, and Iron Ox. I train Jook Lum. Anyone know what the differences between the SPM styles are? Are they radically different? Small nuanced differences? Are there specific characteristics that make you say when you see it, that's Jook Lum, or that's Chu Gar? My guess is that they all originated from one source so the differences must be noticeable to only the most trained eye, no?