Because the limit is so low I'm all in favour of stopping the crime before it happens. I would certainly advise my f/o to go sick as I am a true believer in teamwork and looking after your own. I do not believe in compromising safety but would rather another company employee does not lose their job through stupidity. Learn by a mistake and do not let it happen again in my view.
As said earlier by "nginear" it is not just the flight crew who need targeting for breath tests.