The gimmick works well, it's well-made, will last a long time, and does what it says on the tin. Unfortunately, this gimmick can't be kept in your tuck case with a deck of cards. So when you produce your deck, it's going to have to be either a loose deck, or you'll have to cull the gimmick into the deck once it's removed. The skill level is very low to perform the actual gimmick. Anyone can do this. However, getting it into position in the deck is going to require some level of skill in one avenue or another. The instructions recommend a very suspicious method of giving the deck to a spectator to shuffle, in which you give them half the deck at a time and don't let them shuffle the entire deck at once. This is obviously extremely suspicious and I wouldn't recommend anyone actually try and get that by anyone. Your best use of this is going to be by palming the gimmick, and culling it or performing a pass to get it into the deck when you've received the cards back from the spectator. And both of these methods are going to be more difficult than normal because you'll need to stack the two jokers on top of one another to palm them, to get the effect as seen in the demonstration. This is, unfortunately, very difficult to do with this gimmick. Alternatively, just don't let the spectator shuffle at all. Not letting them shuffle definitely looks less weird than only allowing them to shuffle half the deck at once. Either way, you need to pull a loose deck of cards from your pocket.