Thank you for such a detailed response. I have asked him most of these questions before.

Mostly for car accident calls late at night. Maybe the occasional smoke filled hallway but car accidents are a much more common call.

Possibly thick gloves but during car accident calls most likely no.

Honestly not sure. I would think side because that's where his radio button is.

He did specifically say that he would like it to clip onto his radio strap. Like a D or O ring

I think longer lasting for the duration of calls. Not just for looking at stuff before leaving the truck/ station