Its as safe as it gets from my stand point, especially if it warrants me having a gun and my safety is an issue. In that case, I want all the advantages and edges I can possibly have.How is that safe?
I think whats going on here is, you have people who are worried about breaking a range rule vs people who have reasonably weighed the givens, have taken on additional training, and accept that range rules are not always the best thing to follow, especially when not on the range. If your worried about pointing a gun at someone, light or otherwise, you need to find another tool or figure something else out.
When used properly, the weapons mounted light is no more dangerous (its actually less dangerous for you) than any other light.