Yes thats what I would want too, I take my families security very serious, while we live in a great area, the bad side of town is only a few miles away, and crime travels. As you can see we have cameras and a dog, we are also very well armed.
I would hope that if anyone would enter the house that Sam would chew on them, but I have taught him to "speak" when someone is at the door. I when I say "door!" he goes running over to the front door to check. Thats all the warning you get.
Im wondering, given the facts (good with people, not so much with animals) would he attack a stranger? I am leaning towards the attack after watching the video very carefully. Like I said he doesnt bluff, I have seen his go full on with dogs before and there is no bluff or warning involved, its just attack.