FB - I think its an urban myth that moving the NVG away from your eyes reduces the FOV - you only have about 40 deg FOV anyway and you are focussing your eyes on the screen inside the tube not what comes in at the far end of it.
I fly with mine quite far forward so that vision under them isn't impaired.
Nope - cause if I have the googles closer to my eyes, I can see the full screen /42 degrees.
further away the outer edges of the screen cant be seen anymore, hence less vision- more swiveling of the head needed
Thats about what I have left ...
Limited NVG view when forward with glasses and moved up due to them