I am a nurse, and many friends/co-workers wear these and swear by them.  I have been wearing Klogs brand and love them, but I like how many different styles the Alegria have, so when I found one on sale, I tried them.  My first impression was my feet look like clown feet because the toe box is large, but that is a plus when you are on your feet all day, the arch support is excellent, comfortable and sturdier than the Klogs brand.  They run big, I could have ordered a size smaller, but I can wear thicker socks to fix it.  The are comfortable to walk in, they force your feet into a good heel toe stride, no sore back at the end of the day.  I like these shoes, I do feel like a clown when I look down, but for work they are great.