I was also looking at this book, and I think I might give it a shot. It seems to me that Buddhisms offers more of a philosophy in terms of claims about consciousness and the meaning of life, although I still remain wary of supernatural claims. Although, in some ways, it reminds me of those books that try to merge Christianity and Science (ie, look at this physics constant! If it was 0.01% different we wouldn’t exist, therefore God created us and loves us!).
If anyone else has read this book, I’d love to hear a review/summary. The altering of consciousness (meditation, drugs, etc) as a means of exploring the boundaries of the mind have always interested me, and it seems that Buddhism might have more insight (or, perhaps just unfounded claims) into this realm than any other modern religion.