Have had these and the money clip for a month or so. Unfortunately I've mostly been home this whole time, so not a lot of anecdotal out-in-the-wild observation. However, I see concerns in the thread about this being worse than a standard keyring, and questioning the value of this item.
Well. This is for the folks who would invest in little things like these that might bring a smile to your face, knowing you have something that is unique (or at least, different from most others). Does that make it better of more efficient than other, simpler, and very much cheaper alternatives? No. But it's delightful. :)
Do you need a pair of jeans made out of raw unsanforized denim? Doesn't a $20 pair from a store brand serve the same purpose? The same can be said of watches, shoes, clothes... almost anything. Products like these are not for everybody, they're for a niche. But if you're in that niche that enjoys items not only for the added functionality but also the joy of owning something unique, you might enjoy this. You don't find many keyrings that you can unscrew to put keys in--come on! :)
(If it wasn't clear--yes I'm recommending you to buy this with the caveat that it is not any more functional than a standard keyring, unless you use "delight" as a function of a keyring--which some people might)