In reply to Joak:
> (In reply to Dave Kerr) On a more serious note, goggles or sunglasses? Bearing in mind light is right, should I contemplate both?
Always a good idea to carry ski goggles, but sunglasses can be handy. Glacier goggles can be a good compromise between the two, particularly this kind:
http://i1137.photobucket.com/albums/n504/tingsic/147171_ts.jpg
I have a similar pair and they're great, plus you get the crazy retro look to boot.