Here's another vote for crocs and socks! I haven't worn "regular" shoes for over a year now. I even went out and bought a bunch of new Christmas socks for our Disney trip in 11 days.
We plan on wearing ours in January. I will wear mine with socks (as i always do in chilly weather here in SC), but DF will wear his without socks. He insists crocs with socks is a disgrace...