For a concise introduction that aimed to cover the ground from "synapse to society" it did a pretty decent job. "Mental Health in Canada" is a pretty big topic to cover.
For a mainstream book, I was pleasantly surprised by its inclusion of more critical perspectives. In particular, it discusses at several points the pitfalls of our move too far away from social concepts of mental health and into biological ones alone.
There were places it could have been more critical, however, such as in its discussion of sex work, kinks/fetishes, and substance use/harm reduction. Although it does discuss the benefits of harm reduction, I think that it could have advocated the benefits of decriminalization a bit more, in terms of a public health perspective. It also glossed over issues of gender and sexuality in a way that I felt let the impact of heterosexism and cissexism on queer & trans people too much off the hook.
Mind you, the book's now 11 years old, and we've moved a fair ways in the past decade in regards to some of these ideas.
The writing was dry, but I don't think I've ever met a textbook where this wasn't the case.
This was required reading for my Human Service Diploma Program course. The definitions were easy to follow. I found the book quite engaging. in particular I was a big fan of the quotes that began each chapter
On The Spectrum of Mental Health Problems chapter 4: They called me mad, and I called them mad, and damn them, they outvoted me. —Nathaniel Porter (playwright)