Three reasons against open carry out in the public:

1. The vast majority of defenders do not understand how to retain their weapons when an attacker ambushes them to take the gun. So they themselves become a holster for someone else to use. I wish everyone trained jujitsu but most gun owners do not. (I strong encourage my students to do so).

2. It draws unwanted attention to you from LE, citizens, and criminals. Unfortunately, we live in a society that scares easily. I have answered many 911 calls to a “man with a gun” call only to arrive and find someone who is just open carrying. At that point I have a duty to at least make contact with that individual which would always put me in an uncomfortable situation and the individual in an inconvenient one. Not all cops hold the same views on the 2nd amendment as I do. So your experience may vary as to what reaction you will get from LE when that call comes in.

3. Carrying a firearm for self defense is mostly geared to the reactionary, not the proactive. A serendipitous draw is a proven technique that is vastly more difficult from an open carry rig. Tactically open carry from a self defense standpoint is not as advantageous.