"Understanding the role of a WML for home defense is critical to using it – WMLs aren’t for searching, they’re for target ID. Here’s the scenario: there is a person in your home that you believe to be a threat, you point your gun at it that’s equipped with a WML and see that it’s a 6’9 dude with white power tattoos and a machete, so you light him up. Good clean shoot. Same situation, but this time your light reveals your teenage son sneaking in after curfew. Because you had a WML, congratulations you didn’t shoot your jerk kid!"This, interestingly, brings up the additional possibilities allowed by the newer, brighter weapon-mounted lights, like Surefire's 1,000-lumen XH35 seen here...
There's enough light from those that you can often positively ID targets with spill, with the gun still in a low muzzle-aversion position. Alternatively, an XH35 on a pistol held in a high muzzle-aversion position like temple index will usually reflect enough light off the ceiling of a room to light the room reasonably well.
While the lens on the light is protected by Thyrm Clens, the body of the light can get pretty grody on a short gun like this. I got the masking tape idea watching blog reader rremington shooting at TacCon this year...