This is the first time I've noticed this I think.
If you skip to 2:20 minutes in the video, Pablo wraps a right side wrapper and, finishes the cap with his right hand In what I would call an over-hand technique.
Then, he wraps a left side wrapper and, finishes the cap with his right hand In what I would call an under-hand technique.
I have seen both over and under hand techniques used but, never both by the same roller.
Me, if I use a right side wrapper, I finish the cap over hand with my right hand and, if I use a left side wrapper, I finish the cap over hand with my left hand.
The question is, do you use both techniques or, both hands?
View: https://youtu.be/4RXLInQG_sM