I have a pair, and I just bought another pair from Nashbar. I love them- they are comfortable and easy to walk in. Plus in the summertime, it keeps my feet cool and dry.
I also took to wearing them in the wintertime too. Between the toesies and the booties, I don't have any problems with keeping my feet warm at all.
I do wear socks with the sandals, though. People sometimes say it's nerdy, but I don't want my sandals to start stinking.
Koffee