Also a light on a handgun or rifle is the most effective solution, that's if it's a live or die situation
Yes, especially true for a civilian where (broadly speaking) it's only legal to draw a weapon if the use of deadly force is justified. Otherwise it could result in felony brandishing charges.
For the civilian a pistol WML is a "nice to have" but a properly configured "tactical" handheld is IMO mandatory - and far more useful.
This is my EDC "detached WML" that I carry concealed on the belt or can just drop in a pocket;