G-CPTN
AFAIK Twotters are not NVG configured, ie. the cockpit lighting would swamp the goggles sensors. Aside from law enforcement ac I'm not sure any civil aviation has NVG compatible cockpits.
Whilst doing spotter duties on CC130's we had to place tape over the emergency flashlight mounted on the wall (this was in the back, near the jump doors) as the tiny red charging indicator would cause issues with our NVG's.
Cheers from CYZX.