I remember we were told keep our badges on during lunch breaks outside and coming/going from home to the conventions. I never did. NO ONE ever asks what the badge is for, they just assume (quite rightly) we're a bunch of wierdo's with GOD and JEHOVAH pinned to our chests.
Saw some the other day in town, was so tempted to ask them about their badge so they could jump at the opportunity to talk about their convention. My question would be "but what if you decided to leave your religion? what happens then?"