I remember there was head gear that required Armor proficiency to use. So...when I use that kind of head gear while wearing Jedi robes, does that negate my ability to use force power that is restricted by armor?
No; it's a different section of the body, and doesn't count in this game, for some reason, as "armor."
To the Righteous belong the fruits of violent victory. The rest of us will have to settle for warm friends, warm lovers, and a wink from a quietly supportive universe.