I'm only two chapters into the book but I am loving it so far. And there are a few points of observation:
1. Many people's major concern (when deciding whether or not to buy this book) seems to be whether the tricks therein are stack dependent. To me this is a non-issue. Having read the beginning chapters, even if the tricks require you to use Woody's stack, and even if you don't intend to learn the new stack, there is just so much knowledge, experience and insight about memorized deck in general. There is a good dose of material and insight to enhance what you are doing with whatever memorized deck you are already using. Moreover, there are some interesting features specific to this stack (e.g. first 15 cards, 10 card poker, poker demonstrations, etc)
2. This book feels like an 'extension' to the Mnemonica book. It supplements some of the history and background of development, which is valuable to anyone who wish to study stack work. I love that book so I naturally love this one also.
3. Personally I am not afraid of memorizing another stacked deck, especially given how Woody helps you remember his stack in his book. I have not committed myself full time to remembering the stack yet, but just upon reading parts of the book, I already start to remember some of the cards and their associated positions. For those who have also read this book, you may understand what I mean. You simply cannot forget some of the cards and their respective positions!