They cannot be separated. The usefulness is in the theory and its applications. The impact is in the feedback, not just the instrument. If you do not know enough of the theory to use the theory without an instrument, you should not be using any instrument . On the other hand, an instrument makes the theory more easily accessible.
Instrumentation is only one part of the toolkit.
Feedback by a competent professional is the other. We also provide individual Personal Mastery sessions and Team Mastery sessions using these powerful frameworks. She is an organizational consultant and has spent over 25 years teaching professionals as well as helping individuals and teams recognize their strengths, trancend their weaknesses, and work together better.