If you read the forum, you will see plenty of encounters and their resolutions.
You can see my recent one here:
Remember, OC is legal and you are doing nothing wrong. Stay polite and professional and remember you are representing the community with your behavior. Police may hassle you, but they are in the wrong if they do, and it is likely just a lack of education. That is our job as a community to make sure that they become educated (politely and professionally of course).
Read the forum thoroughly and you will learn most of what you need to know.
Also, consider joining the CCDL while you visit their website.
You will find good information there about the laws, permits, etc.
Enjoy, and let us know if you have questions or problems.