Well for mirrored in the daylight, I prefer the black iridium lens, but with only an 18% light transmission, at night you can't see much.
The black iridium is awesome when its bright, and I use the H.I. Yellow lens for night time and its great. It's not mirrored, but is great at night and in low contrast conditions.
I dont really know if oakley (or anyone for that matter) makes a type of lens that youre looking for (mirrored in daylight but still be able to use at night / mirrored lens for low light and night).
Perhaps Pink Iridium would be your best bet? My girlfriend has pink iridium lenses on her stockholms and she wears those at day and night. theyre not 100% mirrored, but like maybe 40% mirrored.
hope this helps bro