go on oakleys website and look at the lense compostions. the fire and black iridium only let in like 13-14% of available light, thus are good for sun and bright lights. the H.I lenses let in a lot more, like 30% or something.
My guess is that you'll probably be ok, but doing a lot of night skiing you might just want to buy a clear lense.
I feel bad for people who don't drink, cause when they wake up in the morning, thats the best the're going to feel all day