Ask anyone who has survived an encounter in which they had to draw a handgun and chamber a round before firing and they will attest that there's always time and opportunity to rack the slide, 'Israeli Style'. The proof is that they're here, isn't it?
Of course, those individuals who didn't have the time or opportunity to draw and rack aren't going to contradict them, they're a bit too busy .... being dead.
There are just too many possibilities for things to go wrong with Condition 3 carry for me to ever think it's a viable option.
1) You're carrying your Starbuck's super machiato latte in your off-hand, what are you going to do, drop it?
2) You're trying to fend off the knife that's at your throat because you're reacting a bit late to a threat, what are you going to do, ask Mr Gangbanger for a time-out while you use both hands to ready your weapon?
3) It's your precious baby daughter in your hands, are you going to bounce her off the pavement while you do your superfast draw?
4) You're holding on to the leash of your puppy, while he's being attacked, can you hold on to a tugging leash at the same time as you're going for the slide?
5) You have an injured hand, either because Mr BG got the drop or because you hurt it the day before.
6) You're carrying your groceries to the car. Unless you are never going to carry things in either hand, then at some time you're not going to have both available.
7) You were walking hand-in-hand with your wife, girlfriend or life partner and how they're frightened out of their wits and have a death grasp on not only your hand but they're crawling up your arm in terror. Now what? Do you shake them off or do you ask them politely to refrain from getting you both killed?
Guys, the Israeli's didn't go to the "Israeli Carry" because it was superior, and neither should you. The Israeli's went to that method because it was a method to get around the problem they had of a huge number of surplus arms of differing types used by a population mostly untrained in their use. It was a refugee, citizen's army for the most part when Israel was resettled.
If you are untrained, inexperienced and using a weapon with which you are unfamiliar, go for the Israeli carry. If not, ... don't.