I guess I would disagree. An unchambered pistol is a very expensive club. It takes less than 2 seconds to transform this club to a deadly weapon. A club NEVER mis-fires and strikes an innocent. A dropped pistol, has killed on more than one occassion.
A modern semiauto will NOT fire if dropped.
That is certainly your right-do whatever makes you comfortable. For that matter, I have heard the Israeliis carry in condition three- but the cocked and locked carry mode is standard for any local/county/state/national department that allows SA pistols I have ever heard of. I would point out, also, that for most handgun proficiency (sp?) drills, par is a sub 2 second draw and doubletap from concealment, without the added step of racking the slide.
I think ultimately it depends on the context. Certainly, a military officer in an armor unit doesn't really need a instantly available weapon. For that matter, who knows if he needs his own weapon at all? If it gets bad enough that captains/majors et.al. are firing weapons, there will likely be lots of them laying around for them to grab.
For a cop, or a CHL civilian, however, the situation is a little different. In an urban environment, it's entirely conceivable that there won't be time to draw, rack, re-aquire grip, acquire sights, drop the hammer, and run away.
I think the cop screwed the pooch- but only 'cause he had an AD. The fact that his weapon had a round in the chamber is completely in line with the policies/procedures of virtually all law enforcement agencies in this country.
And in less than 2 seconds a bad guy can be on you with a knife or grappling from 22 feet away.
Unless you've actually taken courses on concealed carry please stop lecturing.