In my opinion, a good matlab engineering book focuses less on general tips that you could get anywhere, and more on practical problem solving techniques and methodologies that provide insight into a paticular engineering problem and its solution.
This books succeeds in that respect. Though it gives space to the more general issues of using matlab, it gives ample room to specific engineering problems. I found its information and examples very useful. The topics are focused on mechanical engineering fields, such as vibration and control; however, the math used for such topics are used across engineering and science disciplines. Thus, any scientist or engineer will find this book useful.
The book is written so that engineers at many levels can benefit from it. For example, as a former graduate student, I found the treatments of vibration response analysis insightful. However, an undergraduate or otherwise inexperienced user would benefit from this book as well, because there is alot of general discussion of how to effectively and efficiently use matlab and write m-files.
All in all, I found this book excellent for both its treatment of high level engineering analysis issues and its more general matlab tips and discussion.