Thud_and_Blunder,
My comments are not meant to be negative, if NVGs are the way to go then let's get on with it; that was the original point of this topic. There seems to be wide and differing views as to thier use and knowledge of them; yes, I can be included in that.
The situation I described is one that has happened, target fixation leading to a total breakdown in where the aircraft is in space. As you say, we're all taught to scan, but in some cases when things are getting busy this scan can, and does break down.
Re your last paragraph. As I said in earlier posts I've no NVG experience to speak of, but there again, niether have plenty of the others who have posted threads on this.