If you'd read the swep description instead of just reading the post. (Unless you did but I'm not trying to insult you)
It says that when nobody has seen your face you are in a idle/slow walk form and can't kill. Can't from what I have read. So it would most likely be less possible to get false killed by him unless by misclicks.
But,
Reading through the comments there are people who are having errors in the console/weapon swep that makes it not able to work. I can't fully +/- support but I am leaning + if this swep works as intended.
But also the swep just goes off if you look at his general dirrection which does go with our rules but, it goes instantly and would take away out like 3 second wait rule/1 second wait rule.