sorry, hope i have not put you off.
I thought you might have gone through it all by now given the original post was in 2004.
Good luck with the lantern test, if you're OK in open water, you might well be OK with the test.
Anyway, it might be that in the last 10 years, they have changed the rules with the Chromagen lenses. you are right, it should be a similar logic to driving a car with glasses.
I gave up in the end. I had a daylight hours license, after being told I would not get a license at all. And it did not affect my job at all, I still skippered at night, but had to have another qual'd skipper on board as well.