But if you turn on the light, and find you are pointing the gun at your wife/kid etc. Isn't this a bad thing?
Rule # 2
Never let the muzzle of a gun point at anything you do not want to destroy or kill.
That to me seems to be the biggest flaw with weapon mounted lights.
if i'm scanning the house at night with a handheld flashlight and a pistol, the pistol is going to be pointing where the flashlight points.