Honestly, every situation is different. I've chased a BG down a dark ally, while he was returning fire, both of us running and shooting. In situations like that, I use the light in short bursts to get a sight picture, but to avoid having the light on full time as to draw fire in my direction. If I can use a momentary switch in combination with a strobe, all the better. The truth is there is no one right answer for every situation.. it depends on how well yo know the environment, how much the strobe may or may not affect your ability to poerate and see clearly versus how much of a benefit it may or may not be to you as a force multiplier against an adversary, how dark it is where you are, if the light is your only source of illumination in the area, and so on.. do you hve backup or are you alone? Id he alone or does he have friends with guns too? Things like that. You really just have to decide in the moment what you hope will play to your best advantage.