My only regret about these shoes is how long I waited to buy them!  I have been wearing the white  Dansko professional clog for about 7 years now, and associated the shoe style more with "scrub uniform" look.
I wear a thick low sock with them and they go with everything from sweats to jeans.  The fit is wide, so I would not recommend to someone with very narrow feet.  Very comfortable.  I wear a solid 7.5 and bought the size 38.