I bought this for use in our Lent Group, which is very keen on topic discussion. It is very prescriptive in its lay out. Not a book to read, more a service plan for home groups. We have had to adjust our use of the book quite dramatically.
Its got something for everyone during Lent, I particularly like the idea of sharing the daily readings with a diverse audience as described in Tom Wright's introduction. Chapters are short and manageable.