A sticky would be a good idea, but it's really all about your surroundings, comfort level and knowledge of the law. Before I'd go out I've have an intimate knowledge of the laws in Flyer22's post here: http://opencarry.mywowbb.com/forum13/17649.html
From personal experience I would absolutely carry a voice recorder.
If you are contacted by LEOs stay calm and polite but assertive.
If they ask you for ID, politely tell them that unless they have a "reasonable suspicion" that you have/are about to commit a crime, you aren't required to give them anything.