When I was noodling around with it that was one of the biggest potential benefits I saw. When you let go of the cue for that instant, you are able to draw your hand back straight along the shot line. The way I stroke, I visualize the hand is doing the stroking and try not to think about the CB, stick, or even the tip.
From the transition point at the back of the slip stroke, you are able to simply aim your hand at the intended aiming point on the OB and the cue goes along for the ride. The tip gets sandwiched in between the cue and the CB. If your bridge placement was proper at address, the tip should strike the CB where you intended it to. That's a big should for me.
Other possible benefits:
- lends itself to the lightest of grips since you can't "grip and rip" it even if you tried
- aids in a very smooth transition from back to forward stroke
- increases cue speed without addition muscular effort
- helps you get through the ball better
The last one is really important to me, because I often have trouble getting through the ball with my stroke. I quit on it and don't realize until the shot is gone and the CB just fizzles out on me.
By starting at address with the hand forward on the grip and then slipping it back to the correct position mid-stroke, you arrive back at the CB slightly before you think you will. The presence of the CB is often subconsciously viewed as an obstacle to be avoided. We are conditioned not to collide with things in our path. By striking the ball by "surprise" earlier in the stroke, you end up accelerating throughout the entire stroking distance, instead of proceeding through the finish with the same velocity.
Is this "accelerating through the ball"? Of course not, that's been shown to be impossible, but you are accelerating
into the ball the entire way. Not only can this give you a bit more power, but it can lead to greater consistency since you've eliminated the variable of changing rates of acceleration.
I discussed this point with Phil Capelle on FB a while back, and he could see the validity of the thinking, so I'm sticking with it.