Predictable answers!
Predictable answer? That's because the P in Prune is for professional, and most readers are just that.
I didn't mention cockpit conversions at all, they are not always necessary for the use you describe.
The worrying point is you think your co-pilot acting as your lookout with toy NVGs makes you safer? I hope we don't get called out to peel you off the cliff face.
By all means have a second set of eyes, but if they are 75% blind and you don't understand that basic concept, you will think things are rosey, and then it's all over.