Such a great video Ryan. Seriously I would say it's the definitive video regarding the subject. Thank you for sharing (don't know how I missed this vid for so long!)
To my knowledge, the arm for the pensataq is only similar to the pensacodo in that it's anchored to the head and striking with the elbow. However, the movement, range, and interplay with anchoring of the other hand are different, as I demonstrate in this video
I'm not formally ranked in KFM or any of its derivatives. However, I have undertaken some training with Larry Ceraulo, who was a KFM instructor before the split. He brought me through up to some of the orange material
I have some significant knowledge of it, yes. The only reason I did not pursue formal credentials with Keysi is because belonging to that organization and participating in their business is outside of my budget