Living in Illinois, and working in Chicago, means that concealed is king. I like a magnet that is that strong for retention. Currently I just take the holster out of my pocket and place the holstered gun under my thigh. I can draw with my righthand very easy without any contortions.
As far as racking the slide, I always carry loaded, so that is not an issue.
When I saw that video my first thought was, if you need to rack the slide you're carrying it wrong. Several days ago I was thinking, what would be the easiest holster to draw from when you're driving? My conclusion was it's a chest rig. It may be nice when you're handgun hunting with big iron, but maybe not so great for every day open carry, and not easy to conceal if you aren't wearing a down parka. BTW, a couple of the agents in the Miami shootout had their handguns under their thigh. The keyword there is HAD, before they were in a car chase or collision. I personally haven't been involved in many car chases but I've had
way more than my share of collisions. Stated simply, s*it goes flying, and as those FBI agents found out before they were shot, you can't always find those things when you need them. I've hit potholes hard enough to bounce my foot off the gas pedal. My left foot tends to stay more planted but still bounces if I get jarred hard enough, and I'm not sure how well a pistol would stay put under either thigh with the car-swallowing potholes we have. If we had good roads, and I never crashed into other vehicles, by accident or on purpose, it wouldn't be a problem.