The pistol is a "Fighting gun", it is meant to be simple. Those of us that have been carrying them for decades know and respect that. The block is just a part for preventing removing the gun when you are in your down time. It is as I mentioned great at night, "along with a front night sight" to get it in a hurry in complete darkness, like when dressing and undressing. Otherwise I don't touch my guns. The most I would do is graze my pocket to make sure my spare is where it's supposed to be. And nothing should be going on if you have to remove the gun. I take the holster out with the weapon. I never try to stick a Glock in a iwb holster. If I have to disrobe, I take it completely out with the pistol, do what I have to, and replace it the same way as when I got dressed. That's just me and my rules, same as replacing all my papers and cards before leaving a counter or bank window.You need a routine for youself otherwise you are an accident waiting to happen. Now that I said this I will no doubt loose something, but up until know I have never lost my keys, my wallett, or anything else, because they go where and when they are supposed to go.
Adjusting you gun in a car while talking to your wife and kids or anyone is just a dumb thing to do. I feel bad for the guy , but he brought this on himself. Glocks are efficient little killing machines, they aren't for everyone, IMO too many people have them that aren't aware of the danger element. They are made to point and shoot, they have become very popular, and as mentioned a substitute for the word "gun" sometimes. In untrained hands they can cause things like this to happen very easily. As we know just because somone has a badge ,doesn't make them a weapons expert. playing around with a Glock or any striker fired pistol with no safety is not a good idea for anyone, unless you are paying full attention to what you are doing. I remember my first one a gen 1 Glock 23, and after buying it thinking man this is dangerous unless it's in a good Gaalco holster, "popular back then", and carrying it unchambered for a few days untill I felt comfortable with it. 1993 ish, that was my first of many, Fear and respect of something new is a good thing. But I would never carry any gun unchambered, anything can go wrong in a "shoot fast" situation, you will be too busy to rack the slide and take aim if you are under fire, it's best to carry a different gun if you aren't comfortable with the Glock.