Some people in my apartment complex have seen me in both girl and boy mode, so if the people I live around know it is not a big deal. Since I am out in public en femme I am not concerned about the general public.
As to people I work with and know well I would say about a 5. A few years ago I would have said 10. I still do not want these people to find out and there could be problems if they did, but I think I could manage the situation.