Only if it's something you would normally have with you. Don't go overboard. Just be yourself.
Well, I know many of the creationists would probably not believe me, but I take my Bible with me in my purse, wherever I go...I never know when I might have a few spare minutes here or there, when we are out, and when I do, I read my Bible...that is why its so worn...it gets used by me everyday....so yes, its normal and natural for me to have my Bible with me at all times...