In reply to jmerrick21:
Two years ago I was descending the ladders from the Couvercle Refuge, and I stood aside to allow a Patagucci-clad French guide to ascend past me with two clients in tow.
"Ah", he said, "You are English. yes?"
"Yes", I said, "how do you know?"
"You are wearing ski-goggles", he chuckled, (in a French accent).
That did it. After 40 years of the practice, never again would I wear ski-goggles over my glasses. This vanity subsequently cost me the the thick end of £500 for my Julbo Cat 4 Prescription Varifocal Mountaineering Glasses. Actually, they are very good, and I can also wear them cycling, and everyday hiking when its sunny, and therefore look cool everywhere I go.