I purchased this for professional use at a tasting bar. I open dozens to hundreds of bottles each week, and have sustained a fairly serious repetitive stress injury to one of my wrists as a result. This bottle opener does alleviate much of the stress on wrists and forearms that do a lot of twisting (dominant hand) or clamping (non-dominant hand.) It's also compact, lightweight, and easy enough to keep charging if you have an electrical outlet behind your bar. The included foil cutter easily makes a nice, clean cut all the way around. The action of the mechanism is quite simple and very cool: when it works, it's fast and easy to use.
There is, unfortunately, one thing this product is not: reliable. Customers love it, but I no longer open bottles in front of them, because if you do not get the machine aligned EXACTLY with the cork, it will not work. It will, instead, chew up your cork, get itself stuck in the neck of the bottle, and require you to use your handy waiter's corkscrew to rescue the situation.
Bottom line: if you need something to help take the stress off tender joints, it's worth your money. (Just don't use it when you're in a hurry.) If you're a gadget freak, skip this one.