Well the law here in MS isnt well defined. The AG office has said if a firearm is not concealed in whole or in part it is not in violation of state law. Some of the state supreme court once said that even a handgun in a holster is "concealed in part" because part of the handgun is concealed. So if you do OC some cops will try to get you with CC so get a permit. So get a permit and you SHOULD be ok. I say should because not all people like OC. I am planning on doing some OC when i get my permit.