I just finished it about two hours ago (right before dinner).
My personal review of it (although I'm not all that bright):
Overall - I'd recommend it to anybody with 3 - 5 (or more) years of consistant practice under their belt/sash/shorts/gloves/whatever. By that time, most martial artists will have enough experience in the arts to understand where the author is coming from. It can be read by any level, but it's verbage lends itself to mroe experienced artists.
Language - In the author's attempt to make the book applicable to all systems and styles, he tends to come across as overly academic and far too wordy. In my opinion, however, he is successful. There are a few typos in the text that tell me that his proof-reader could've used another cup of coffee.
Subject Matter - The author does a superb job at describing each principle and its use in combination with other principles.
Finally - I don't feel that I wasted my money on the cover price, although I would have felt better at an amazon-esque price instead of Books-a-million.
Score - 3 3/4 stars (out of 5; "Living the Martial Way" got 5 out of 5)