I've had lots of training and shot competitively and can shoot on the move but being out in the open is a real bad idea if someone who has some training is shooting at you. Go to a Bianchi shoot with your favorite pistol and see how you do on the mover. It goes about as fast as a guy can run and my first try I hit it 48 out of 48 times. One thing I do know is the faster I am moving the less likely I am to hit anything. It's easy heal toe but at a sprint it's very unlikely I'm hitting the target. Here's about as fast as I can move and hit 50%.
http://www.youtube.com/watch?v=T3ti0BuiwPg