I was really excited to get these in the mail but I found that I could never get comfortable with them. They were light and felt pretty good on my feet, but they were also pretty boxy and they just seemed to look really big on my feet. I'd suggest trying these on somewhere before you commit to buying them.
Your feet will thank you, or better yet, they will make you a frozen rum drink and pull you up a chair for buying these shoes. They can be used on the boat or in the city and the fraying looks great after you get them wet the first time. Must buy for boat bums.