Speed of the draw stoke is nowhere near as important as the timing of the draw stroke. Newbies want speed.......experience wants timing. It is this timing that is the ultimate tactical advantage, but most people do not have the training necessary to understand the OODA loop, the reactionary curve, initiative deficit, and taking the initiative. When you get to dictate "if and when" you are going to enter the fight, that is a tactical advantage of the highest degrees. When you are open carrying your ability to decide "if and when" is severely hampered and you lose one of the biggest tactical advantages possible inside of a life threatening situation. Speed of the draw stoke is not about "tactical advantage" it is about speed of the draw stroke. To infer that the speed of the draw makes up for your ability to use your timing to the ultimate of benefits, would be a huge mistake that can be found out very quickly in properly conducted force on force.
Hmmm.... I do take exception your stating as a "Lie" that cc has no tactical advantage. That would be just an opinion of yours and not a fact. Regardless of the situation if it is needed to present your firearm cc is slower. Maybe only a fraction of a second. Maybe only a half a second. How far does your adversary get in that last half a second in the Tueller drill. Surprise is an offensive tactic as developed and not a defensive one. You are reacting to a situation that has already developed. Maybe there might be an opportunity to react or maybe not. Maybe open carry is a deterrent or maybe not. You lean toward the former, I the latter.
We can both agree that carry, open or concealed, is not the panacea of self defense. Training is valuable regardless of method. No such thing as enough in my opinion. Situation awareness, in my opinion, is our most valuable asset regardless of open, concealed or not carrying at all.