Alex1975
Tour Winner
I remember reading an article about how he tests clubs and how as every club (even though same make and set up) is slightly different some will be more prone to go left to right or right to left etc he will only hit each one once, twice at most,after that you will subconsciously adapt your swing to how the ball comes of the club face.
Ye a saw a video of him doing a clinic where he pretty much did exactly what you have described. Very interesting.