Some valid points in the video, I have the Serpa CQC and like it a lot, I loosened up the retention screw some and have no problem with the draw. When I first got it the retention was so tight I can easily see this happening. Training will help out with the trigger finger some but not 100%. I'm not sure if any Kydex holster is perfect for safety during the draw as I have seen others that were far worse than the Serpa. I will have to look at the Safari Land and see for myself.
As for the Sig compatibility I have herd of some having problems finding a holster that will work with their gun.
As always good information here, thanks for posting.