Socal,
Not with the new pitcher. With one who is established with their mechanics they sometimes struggle with keeping the ball in the glove. They tend to pull it out at the side and still do the back swing. It also tends to change the timing and rhythm a little when they first start working on it. They dont like the "Feel" of bringing that glove to the side and keeping the ball in it. After about 3-4 lessons it starts sinking in and they are right back to their normal pitching with timing and rhythm in place.
One of my cues I use is I tell the young ones to "Rock the baby" when they cradle the ball at the side. Seems they relate well to that one.
Dana.
I'll run it by her PC. I'm thinking I might get some push back though!