The text implies a much more 'hands off' flow to this trick than is the case. In fact, it does require a sleight that you are likely to have to 'man up' to master. I have no objection to tricks based on such mechanics, but to my mind, that's not what the description suggested, albeit the reviews now do.
Which raises a different question - if you want to learn this trick but will have to learn a sleight to do it, is it worth your time to learn it? Possibly so, in fairness it is something you could also use quite organically to manipulate cards either for other tricks, or as a backup means of getting yourself out of a hole. Personally, however, there are other sleights I'd rather spend the time on.