I have test project with single character mesh only and it works, but is far from what I need, for example for full body awareness (or true fps), because this is very hard to do just, some limitations.
And about arma, you are wrong as I was. Maybe in Flashpoint was one mesh for character, I don’t remember, but in Arma 2 for example, you have separate meshes. You can see your legs but not torso. Is different model for fps and third person in arma, some reasons. I’m not sure about Arma 3, but this way they did it in Arma 2.