As an aid to navigation NV equipment is of little use. Your normal night vision will do you fine, you just need practice to move around with confidence.

NV equipment will destroy your normal night vision, it also takes practice to move with nv equipment because you lose your perception of depth.

Lastly if you want to use nv equipment to be stealthy you have to realise that NV equipment leak light from the eyepiece and hum or whistle in operation.