In reply to JayPee630:
I read the book cover-to-cover and used aspects of it in preparation for an expedition a couple of years ago. It helped me enormously and I felt extremely fit while I was out there. I've followed the same rough idea for Alpine trips since then and think I have definitely been fitter as a result of reading the book and changing my training versus what I used to do.
The big new thing for me in the book was getting in lots of low intensity volume work while supplementing with hard sessions. I did one or two strength sessions a week - either steep bouldering or circuit training. I didn't do any gym work, and still don't.
One word of note is that the book's approach is very much designed for Alpinism - i.e. long and slow efforts. I spent about a year wondering why my cycling was not improving greatly based on my training. The thing is, while I was building a massive engine for zone 1 and zone 2 I wasn't getting any faster on the bike as I just didn't have the leg power. That was an easy fix though - just chuck in a few more fast efforts and lots of hard hill reps.