If you're going to open carry, make sure you stay in condition yellow and get some handgun retention training. You MUST maintain situational awareness at all times, especially whenever someone is within your comfort zone.
As a matter of fact, the above goes for CC as well.
Handgun retention training is important regardless of how you carry. One never know what may happen in an "armed confrontation". You may draw down on a BG and either the BG or an accomplice attempts to disarm you. I'm a firm believer in quality training.