Low Light Shooting/Clearing.

[BlackKnight]

The rail controversy has prompted this question. Seem a lot of people are against light on their guns. So, how do you train/do your low light shooting or clearing.
Tactics and training have evolved. When I first came into shooting I was taught the old FBI way of holding a flashlight away from the body because of the belief that's where the bad guy is going to shoot. Well, I'm going to tell you that tactic limits you to a lot of things, like that's very difficult to do in tight close quarters. Especially if you're doing a fluid room clearing.
And if you're holding a flashlight close to your gun and grip then why not have it on the weapon then? Keep in mind the light is not supposed to be constantly on.
Anyway, thoughts?