This is a good product, and I've no doubt that many (including me) will carry it and use it often.
One small quibble: the ad copy suggests that you'll receive "gimmicks." The classic
definition of "gimmick" is: "a secret device used to accomplish magical effects." Examples:holdout,
pull,invisible thread, or a secret compartment, etc.
Using that standard definition, this
effect does not rely on "gimmicks" but utilizes some unusual keys and some basic sleight of hand.
There is no "secret gimmick" that will do the work for you.
But again, I think this is a
worker, and I certainly plan to use it.