Yes, many would argue with this claim. Yes, I would agree with them.
Rebus is a man of his city, Lorimer is one of his. And they are different - the cities are different, the cultures and issues are different, and Alex Gray reflects this. This book will resonate with anyone who has worked in the City of Glasgow, with it's wide variety of businesses - gone are the stereotypes of the last century; shipbuilding is massively reduced (but still important), industrial output is almost insignificant compared to 60 years ago, but the new 'industries' of finance, insurance, and most especially legal work are predominant.
This book reflects this, and peels back the glossy facades of the A4 brochures and PDF files on the Internet, showing how normal, rude, and sometimes raunchy people try to get by in this new environment. And sometimes they get very greedy, and think they can also get lucky.
And then there is Strathclyde's Finest! Lorimer is a gem, not perfect, not brilliant, but totally committed to the ideals of his job. Which may not always endear him to his equally hard working wife, but she still loves him for his adherance to these values. His relationships with the other members of the team are exactly how I can relate to them being - not perfect, he sees the flaws in junior members, but also appreciates and recognises the abilities of those who have them. You will know who they are after reading this book!
Incidentally, those that think that some character development is lacking, that some elements are not conclusive perhaps have not encountered a book that is part of a long standing series. Endless repetition does nothing other than alienate faithful followers, and finalising every sub-plot during every book does not leave one feeling that something more might be coming. At least the latter does not embrace the main themes of the book, and the former avoids the problem of regular readers starting to turn page after page looking for something new, only to find they need to turn back to find out what they missed!