I'm with Possum.
Well, not actually "with" him, but I agree.
One tactic does not fit all. Sounds like Possum has walked into a few "empty" buildings and can relate.
If I'm the first in the stack and assume low/no risk, then I use a traditional low ready. Nothing but worms get shot if I ND.
If I'm first in the stack and assume high/probable risk, use a high ready, handgun pointed foreward but drawn in close to the chest.
If I'm anywhere but first in the stack, sul. My friends/coworkers don't like having guns pointed at them.
If I'm staying to secure the entrance, low ready.
Working on my own, low ready or high ready depending on percieved threat level.
I'm not a cop, nor do I play one on T.V., but the article seems to be a rational man trying to tell his coworkers not to point guns at people. Sure, you may be justified in pointing/shooting yet resolve it without firing. Good, and you were justified in being prepared to fire if needed. However, the article seems to be addressing the issue of police pointing guns at people just because they can. It happens, and as evidenced by the Va. shooting mentioned in the article, it's sometimes doctrine. Bad form. In short, my view on the article is that there are a lot of people carrying handguns who apparently don't understand that you shouldn't be waving it around indiscriminantly.
Granted, my experience lies totally in the realm of the military and security. It's been taken as a given by everyone except the police, apparently, that AD/ND's happen and shooting people who don't need it doesn't win hearts and minds. Maybe I'm too many beers in (I just got off work) but this seems like real world training is severely lacking if we're still having to tell folks not to point guns at other folks without reason.
Another agreement with possum. Trigger discipline and muzzle discipline go hand in hand. Without them, you get sued and screwed.