One thing I notice is the reversed meanings of the cards seem to have no real pattern. Sometimes they are given as a deepening of the upright meaning, sometimes they are the opposite of the upright meaning. This isn't a huge problem, but I do tend to look for patterns and so when one doesn't make itself apparent, it does not sit well with me. Also, the meanings are deeply and completely RWS interpretations, and I am in a place now where I am exploring other systems or ways of looking at the minors, and would have enjoyed seeing something a bit broader. Perhaps the book should be titled 78 Degrees of Wisdom: A Close Look at the Rider-Waite-Smith.
I will say that the explanations of the cards are all very lucid, thorough and easy to understand. I would recommend this book as a reference to be kept on the shelf beside other good guides such as Sarah Bartlett's Tarot Bible and Pictures from the Heart: A Tarot Dictionary by Sandra A Thomson.
I look forward to reading the chapters on divination and tarot spreads.