I was using the ten finger grip last season but have gravitated to using the interlock. I felt that I was pulling the ball a little more than I like, though everything feels so solidly hit. The biggest con or concern for me was the amount of stress it places on my right pinky. I have strong hands, but the pain was enough to tell me that I either am not used to it or its not for me. So I use it mostly on chips around the green.