I love this exercise. To me, it's so satisfying. It definitely replaced smoking cigarettes. I can do this until my hand cramps up due to my poor grip. Great video.
Watching this AFTER seeing your 2014 bottom deal video is VERY interesting. In this one you spent a lot of time getting the grip right and then in the deal itself, the push-off illusion kind of doesn't work that well. The 2014 video is a huge improvement. :)
There was a discrepancy in the rhythm of the deal. Btw, are you sure it was the erdnase deal? It looked like a strike to me. If it was actually a push like the original erdnase method, then moving the 2nd right hand finger too close to the bottom is a tip off.