[OneWingedShark]

In a life or death situation, will you have enough time to chamber a round?

Very often, yes.
The question is "is it better to just bust in and start shooting, or take the time to move deliberately?" the answer is obviously the latter.

The only two real-life situations where round-chambered makes sense is military patrols (e.g. ambush/attack response) and certain forms of hunting (e.g. flushing birds).

[archy]

The only two real-life situations where round-chambered makes sense is military patrols (e.g. ambush/attack response) and certain forms of hunting (e.g. flushing birds).

I take it you've never been on the Nuclear Position Duty Roster and had to pull guard on the toybox.