Hi,
Yes, lots of good stuff in this article. Pretty much all of it agrees with all the training I've taken over the last few years. I've always trained with at least one spare magazine on my belt, using both "tactical" reload (sometimes called "combat" reload) and "emergency" reload (or "slide lock" reload).
One thing the article doesn't mention that my instructors have stressed in our training is "getting off the X". In other words, don't just stand there while you reload. Take a step or two laterally in either direction. This could help your adversary miss. I know some folks might consider this a useless "tactical dance" move but why be a stationary target, especially when you're not able to toss lead back?
Another point mentioned in the article was the vertical versus horizontal magazine carriers. I happen to like my horizontal carrier and have trained extensively with it. It "indexes" into the mag well just fine.
If I want to use an additional vertical mag holder, or two, I can but it's not my normal EDC.
I also have a double pouch that I usually wear only at the range when we have to carry at least three or four magazines to run all our drills.
As we're working out on the range I will usually pull a mag from the back pouch and slip it into the side pouch during a lull in the action. That way I'm always pulling my reload mag from the same spot. But I have practiced reloading directly form the back pouch. The horizontal magazine on the side of my belt is covered very well with just a t-shirt.
My instructors have always taught us about "three to five shots at three to five yards" but it's really hard to find a definitive origin for that statistic. I did a cursory search and found a few references.
The Personal Defense Network tries to look at FBI data (LEOKA stats) to find "The Rule Of Threes":
Learn about gunfight statistics based on the FBI data in this article from Personal Defense Network.
www.personaldefensenetwork.com
In this CCW Safe article instructor Tom Givens compiled data using his own students involved in civilian sector "gunfights":
Three yards, three rounds, three seconds. According to my friend, mentor, and master defensive firearms instructor Tom Givens, most gunfights involving civilians and felons takes place at a distance of approximately three to five yards, approximately three and one-half rounds are fired, and no
ccwsafe.com
This Lucky Gunner article compiles trends from several sources and discusses "The True Distance of a Typical Gunfight":
How far apart does the typical gunfight happen? We analyze police and other data to determine the distance in this article.
www.luckygunner.com
If you'd like to pour over the allegedly real FBI data, here is their "Crime Data Explorer":
I think the "Rule of Threes" is akin to the origin of the Tueller drill. They're not bad things, good training exercises, but probably grew out of a combination of fact, myths, legends, hearsay, misinterpretation, and imagination.
I'm just an old noob who always carries a spare magazine, and likes to ramble.
Thank you for your indulgence,
BassCliff