Awesome, one of my lost used features when I'm playing warzone lol or any competitive fps. I have a great pair of comfy ear buds I plug in and gear shit just as clear and positional as say using Sony's own platinum or gold headphones. I stopped using those although good bcus thy give me heafa he's, I think it's the grip..
Considering the position of the light, i doubt it. I cant see the camera picking it up. I think its more an indication that the controller is on. More like the xbox "x" lighting up.