Played with mine for a few hours today. Forget stroke for a moment - pendulum or whatever. I like the muscle sensation it gives me. It really "locks" my upper arm and torso.
Personally, I'm not against elbow dropping (Tom don't kill me for saying that). What I try not to do is move my elbow up on the back swing (which I'm guilty of). This helps me eliminate that.
Hey, what can I say? Super product.