I love my new shoes. I won't be taking them off.
http://www.zappos.com/images/704/7138704/83599-d.jpg

(I missed the Keen/socks question. I have worn mine (open ones) with socks, but it's not ideal. I much prefer them without becuase I'm usually getting them wet and dirty.) (Socks can be worn with sandals, but only if they are a heathered rag-wool/cotton blend, jusy an fyi....)

I wear sandals all the time and am on my feet most of the day, every day. Mine are Mephisto, a brand I have been wearing since I don't know when. They are expensive, but I still have my original pair which I have had recorked several times. I now have several styles, some of which came form Zappos, and I can second the endorsement for their service.