SRR,
I've got a lot of NVG hours, and I like flying NVG.
One issue that has not been raised is crew duty limits. Most mil operators impose a loading on NVG hr for the purposes of calculating crew duty because it is fatiguing. There are risks in every aviation endeavour, and NVG flying has its own peculiar set - kind of like flight in IMC.
I think I can speak for every one who has any experience on NVG - it beats the hell out of flying in the scary dark.