I found the videos intresting because I've never trained Krav Maga from a school. I looked up the unarmed vs gun techniques on the internet then started drilling the material using a paintball pistol and paintball goggles. The krav maga works well when the pistol is within arms reach. But for distances 5 - 8 ft I had to come up with my own techniques. I've gotten very lite on my feet. The average joe, the first time they do this drill, can't score a hit with me starting 8ft away. By the time I close distance they usually only get two or three poorly aimed shots off. Then the gun is disarmed and I give them a nice couple shots with my fists or whatever. Once they learn that I have only two sides to really dodge to, left or right, and as they become better at shooting a moving target, it becomes easier for them to score hits. But I've never had anyone be able to hit me the first time they do this drill. That's why I think it has merit for practical application and if I ever find out, I'll let you know.
To have all style is to have no style.