This is a top notch guide which is both informative and pleasing to read. The format and style of the book is excellently presented with a good use of well annotated, maps, diagrams and topos as well as more 'aesthetic' photography. Really a lesson to other guidebook authors.
The guidebook focuses on the entire outing of completing a particular route, not just in the technicality and route finding of the pitches/route themselves.
If I had one criticism (and it's more of an observation really) it's that because it's so comprehensively written and illustrated, in some ways it removes some of the uncertainty you get in planning an expedition from scratch yourself - probably why so many people seem to like it!