2 things I hate about Xtra Tuffs:
Neoprene shrinks in cold weather making the ankle area very narrow. (Even sliding a size 13 foot into a size 14 boot)
The soles are designed so at the end of a day you have a nice collection of clam, crab, etc stuck in the sole.
That said, with a quality insole, they are very comfortable.
I hear sketchers makes waterproof sneakers. I might try those this summer. Their slip-ons are great!