I don't know about the Keens, but my Ahnus were my summer shoe for several years. I hiked and trail ran (haha! That sounds so tough; "slowly and agonizingly trail jogged" is more accurate.) in them. They also went in and out of the lake regularly. They're trashed now. I tried to go cheap and replace them with a Cabela's brand shoe. No dice. Now I'm in the market for a new pair. May take a loan out on the house.
BTW, I have really high arches and the Ahnus were great. Your mileage may vary. :001_smile:
(ETA: Despite being trashed, I still use them as my barn/morning walk shoe. I love them, but they're really trashed. And a bit stinky.)
(Edited again: It's this shoe.)