So, I've been working on my low light shooting techniques with my Surefire G2 and I'm curious about the use of a flashlight to disorient/dazzle someone's night vision. I guess I'm mostly curious about whether or not it is something that can be relied upon to tip the scales in my favor when someone is advancing on me when it's dark?
What sort of light output is enough to disrupt someone's vision (if that's a thing) and what's considered overkill? I like my Surefire because 65 lumens seems nice and sensible without giving up much in illumination, but some WML's I've been looking at for my Glock put out something like 650 lumens...does that have any advantage/disadvantage in the scenario that involves me in a smallish apartment with light colored walls? Because I'm not too crazy about blinding myself at the same time.