when i'm doing large presentations to prospective clients my company gives me what they call a "look book". This is a deck with information about every person in the audience all the way down to personality traits, triggering words/phrases, and negotiating style. I think it's pretty normal.

Are the potential clients aware that you have this? Are you willing to say who you are or who your company is or would that be embarrassing? I would absolutely not be your client.