Hi Rock.
When you get to a certain point in MAP, you will find that part of the exercises are designed to aid in Lucid Dreaming- Reality checks, affirmations, and dreaming keywords were all designed to aid in this, and are very effective in getting your mind trained to be aware of your subconscious processes, bringing consciousness into it. So yes, they can be used in LD. To launch or not to launch- that is your decision.