Keen Commuter sandals are my only bike shoes now. I wear them with or without socks (and with wool socks on cold-weather rides). I use cleats and Crank Brothers Candies pedals. No problems clipping in or out, and I didn't have to carve out any of the sole (I did have to do that on some previous Cannondale bike shoes I wore with the same pedals). Have worn the Keens on up to 50 mile rides, no problems there.
The only issue I have noticed is that occasionally I get a foot or toe cramp after rides. This may happen even if I wore stiff-soled cycling shoes, though, as I get foot cramps when I haven't ridden in days as well (usually if I've run that day instead). So, I can't really blame that on the Keens.
So far, I don't think they're too stinky...I should probably check just in case!
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow