There is a gimmick used. The construction is a bit involved, maybe will take 30 minutes to construct. Honestly, I never even constructed the gimmick, because the next day I learned ACAAN from Asi Wind which is a far superior method. But I knew there be a gimmick purchasing the effect, so I am not complaining about that.

The deck is completely normal. You can use the Engineer gimmick as an strong opener. The spectators will never detect the gimmick if you are careful and the cards are entirely examinable. This is great, can hand out the cards immediately for inspection. Furthermore, there is no stack to memorize (until in ACAAN variations).

The demo video is mostly honest. However, depending on the number chosen you may need to transport 1 or 2 cards. The instruction video explains how you can do this in a very natural looking way without drawing suspicion. Personally, I would just top-palm one or two cards, because I love to do card sleights at any opportunity. But if you are scared of palming cards then you can avoid it. (I suggest palming because "simplicity is powerful" is a principle I strongly believe in, eliminate as many visible moves as possible.)

The video quality is poor. But I was not purchasing a video for artistic high-definition value, just to learn the secret, and it did its job just fine. The instructions also come along with a PDF document with more details.

The biggest fault with this product is that, unfortunately, there are signifigantly better methods. The ACAAN method that I learned the next day can do everything the Engineer does and is on top of it cleaner looking. There is another trick on PenguinMagic, called "Grail", which from its demo videos looks just like the trick done by the Engineer. I never bought that secret yet, though from the looks of it the "Grail" seems to be visually better.

That is the reason why I give this product 4 stars. If you buy this product you will be able to do the wonderful trick shown in the demo, it will get great reactions. So there is nothing wrong with this product. It is just obsolete by better existing methods. So if you are familiar with other card-positioning methods, you may end up never using the Engineer.