I have one of these on my XD for home defense. The M6 Tactical laser illuminator. It's go the laser, but it's also got the super bright flashlight. It's got a rocker switch for both continuous and intermittent illumination. The idea would be to leave the light and laser off until you've found the guy, then use the laser and light to ID and aim at the target just when you're ready to confront him. The light is very bright, so much so that it'd totally blind the guy in near total darkness.

Unfortunately, I don't think that there is such a thing for your revolver. As for the lasergrips, again, they have a pressure switch and you simply wouldn't activate the laser until you're ready to engage the target. This way, by the time the laser emitter gives away your position, you've already got the jump on the bad guy and are aiming your weapon right at him ready to fire.

Only a fool would walk around the house looking for the bad guy with the laser on.

Mike