That is a pretty nifty little gadget. But most picks are so cheap that saving money wouldn't really be a reason to buy one, IMO. And for those of us who use hand finished, beveled edge picks - as I do (mostly Gravity 3mm Stealth or Sunrise models) - this won't do that. I do use a thinner pick for my acoustic though, and I guess some of those credit card picks might work for that, if I was using standard Nylon or Delrin or similar materials to what is used in those credit cards.