Thanks for clarifying that.
I don't agree with the idea that a landing light can be used to illuminate the way while enroute, however....if that was what you were getting at. In my experience, while flying in an area of high humidity over the ocean at night with no moon, the last thing I want to do is turn on an exterior light.
Besides, the landing light does nothing to help you create a visual horizon where the horizon has been lost due to dark water and no moon.... and I do not have IFR to back me up.
I think that the NVG's are a great tool, but for night overwater operations, they are not capable of at producing a horizon 100% of the time.
And there are no off-shore stuctures where I am.