A golf pro had one at the range one day a couple years ago. He was making nice smooth swings with it and the ball was flying nicely with just a hint of a draw. I was watching and he asked if I would care to try. I did.
Normally, I hit the driver o.k. with a little draw. I hit that thing o.k. with a little draw, just not as far.
I went to my own driver and hit such wild duck hooks I was sure I could hear them quack.
I lost interest in making that particular purchase.