I have taught piano lessons for over 10 years. Any repetitive fingering exercise will help a person develop their finger dexterity and improve their overall technique. I usually use the traditional Hanon book, but picked this up because I play a lot of rock. I think this is a good book. If you go through it, you will be a better player and improve rock piano technique. If you pay attention to the exercise and don't just run through them mindlessly, it will help your ability to solo and play through licks/runs.
Its not the traditional Hanon, but that's not always what someone needs. I liked the book and would recommend it to anyone who plays a lot of rock piano.
(Musicians Institute Press). The latest in our popular series of Hanon books, this volume for rock keyboardists features 70 essential exercises in a variety of styles: classic rock, pop, progressive rock, rockabilly and more, all based on the requisite Hanon studies. The exercises address major and minor modes, blues scales, pentatonic scales, workouts for right and left hands, and more. Doing these exercises is guaranteed to build fluency in twelve keys! Also includes suggested fingerings and suggestions for practice.