If hitting is about timing and balance, can you imagine owning a pitch that has a velocity between your fastball and your change up…with a sharp curve AND drop!
I like Coach Johnson's building block approach where after the theory and mechanics were taught, the demonstrator was put into an on-field test beginning with a release drill, on to a drill to demonstrate ball movement, then utilizing a location drill called the rope drill.
This pitch is really teachable, provided it can be coached. More exactly, I think that most pitchers would find it too difficult to teach themselves (the exception might be if the player used video and playback equipment).
"Nicely done DVD by a very qualified, likeable instructor and demonstrated by good, teachable players!"-Coach JP