So is civilian use of NVG permitted in the US? If so why don't HEMS use it?
The lack of detail regarding location and employer give me reason to think you know that what you are doing is either wrong or foolish - what about a duty of care for your passengers.
As for sharing, I have already told you how we operate in that environment and what equipment we have - it is exactly as Gomer Pylot says, because you will end up IMC at some point we are equipped and trained to cope with it rather than having a plan B of 'turn around'.