Another concern I have with maintaining a "Sheepdog" attitude (remember how Grossman defined that term - it had nothing to do with civilians per se - it had to do with a mindset that typified those who served, who stood on the walls) - is that it may distract one from the other important ways in which we can "defend" ourselves and our loved ones. That is, a "sheepdog" (again defaulting to Grossman), by its nature and by its mission, does not practice avoidance or de-escalation, it practices confrontation. For a civilian, such a strategy is likely to increase the danger to those you love who may be with you.
I know the speech in my mind it wasn't literal but a metaphor. If Grosman knows sheep and working dogs he knows the dog tirelessly stands guard, makes it presence know and only leads an offensive attack attack it absolutely necessary. The dog needs to thwart or stop the attack without stressing or scattering the flock. Well in real sheep tending anyway.