I watched the 3 dvds and what I appreciated about them was Gambler's tips on body language and subtle kino, however nothing new or innovative.
The stealth adjective is only a marketing monouvre to get you interested in the product.
It was great for the price (free).
Overall I can't say puatraining is at the same level of Mystery Metohd, they try to differentiate from MM but they end up teaching MM.