Next month my wife and I are taking a trip to Iceland and Greenland. Not camping but lots of day-hiking. I'm expecting high temps in the mid-50s F and lows in the high 30's to mid 40's F. Also maybe some glacier walking involved. My intention is to do as much of it as I can barefoot or in Xero huaraches. Everything I read online of course says to bring "sturdy, waterproof hiking shoes". I'm hoping I don't need them, but on the other hand I don't want to spoil a great vacation with cold, wet feet. I'd rather pack 'em and not need 'em then vice versa. Any suggestions on lightweight shoes that would fit the bill? I'm considering Vibram Trek Ascents but I've never owned a pair of Vbrams so I don't know much about them. I'd appreciate any help or suggestions.