Originally Posted by BlueTrain
...the basis of all this discussion is the assumption that all situations will involve a fast draw against, presumably, someone else also making a quick draw, or so it seems.....
I think the basis of these discussions is that you have no way of knowing in advance whether or not you will need to put your weapon to use quickly. Therefore one really can't assume that he will have time to get it out from deep concealment or that he will have time to chamber a round or he will have two hands available to chamber a round.
If you can't know for sure that you will have time and both hands available, it just doesn't seem very wise to count on having the time and both hands available. Too much can be at stake.