NigelH, your comment about NVGs having a limited range shows your lack of knowledge. Do yourself a favour and have a look at what a set of goggles actually designed for aviation look like - guess what they don't have a limited range and some can be focussed from 10 feet to infinity.
Listen to what the experienced people on this thread have to say - many have survived the introduction of goggles into the military and are trying to save you from having to re-learn the lessons (many very scary ones).
Try driving along a country road in the dark with the head lights off and the passenger only on NVG - see how happy the driver is to continue when he can't see the road you are describing to him.