I have used it when necessary and several friends have and continue to use it. It works EXACTLY as advertised. Yes, it can be a little tedious, until you get used to attaching it, but nothing does the job as well and interferes as little with your hand and wrist. For $15, it's a knuckle, joint, and tendon saver of the first magnitude. Just follow the directions.
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"Those who do not remember history are doomed to repeat it."