I just wanted to add that I met some of the people from the first video, I went to a beginners cow clinic at Willowbrook, its not that far from me.
Everyone there was super nice, and all though it is all parelli there they didn't force parelli on anyone.
They were very professional about it.
They did ask everyone to try the clinic riding in just a rope halter, but they didn't mind those who were uncomfortable riding that way, they just asked everyone to try it.
It was a fun day anyway.