I suppose it does the job but it's plastic and easily broken. I already chipped the corner by
dropping it. The price of a penny and then $5 shipping was a little less than a metal one that is
$10. Get a metal one, get two, nothing ticks me off more than my cards becoming warped. I've thrown
so many decks away in the past 15 years that I could have built an outhouse. You will always have
the metal one and a card clip is for any performing cardman who wants his cards to stay pristine.
The invisible one is just a cheap plastic one that isn't really so bad but not built to last. That's
all. Now, go show someone your magic!
Living in cold or variable climate can be a problem with this product but there is a way to prevent, sometimes for years, crazing and cracking of plastic.
First as with any device designed, it has a pre-made shape and what we use it for stretches the item to its limits. I suggest you try placing a deck in the guard and not removing it for a week or so. This allows the device to physically resize a bit. Secondly, many people grab their boxes at the top and bottom then pull the deck out. I suggest you try pushing the bottom or sliding bottom to top so that the (front ) pinched end is not stretched both in insert AND remove. I've done this with over a dozen of these clips and only one has broken and one crazed in a two year period.
I hope this helps everyone that reads it.