Yes, I've had one for several years, and I think Chris Walker also has one. I bought mine from the maker in England and it was accompanied by both a written instruction and a video.
The club works well but I must confess I don't use it so much. I've also attached a velcro system to it so that I can follow my impact angle. On a good day I can get a click at grade 3 but most of the times I have do with 2,5.
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