The material applies to such a wide range of situations that I suspect others might find it useful. For example, it wouldn't surprise me if consultants will find this book useful when approaching a new engagement. It provides some useful tools and approaches to tackling new problems.
A really useful book that I will revisit time and time again. As another reviewer suggested, if you are serving out your notice before starting a new job, this would be a good book to read. One thing is for sure, once you start your new job, you will only have limited time to read!