well monty if jpm says to Do it...my advice is don't do it..like his one arm chins.
I certainly don't care for all of Vince's ideas, but I've found some of them worth exploring.
To get this thread somewhat back on topic, Scott used to do a type of pull-up in which he only really contracted the scapula. I don't know if he threw that in the seminar to make attendees feel like they were getting something obscure/special, or if he actually used them when competing.
Are you familiar with these, Don?