I decided to try these Crocs to have water-compatible, comfortable, non-slip shoes for when my dog is dock diving (which means that I get wet and the ground gets wet and/or muddy). They have performed even better than I expected, mostly because they're a lot more comfortable than I'd expected. I've been wearing my new Crocs in hot/warm weather, using the heel strap. Now that it's getting cooler and I'm more likely to wear socks, it works better to fold the heel strap out of the way.
I have not worn these outside because, as everyone knows, they are ugly! Therefore, I can't comment on all-day wear or walking any distance. However, they are indeed very comfortable as I wear them off and on during the day and just around the house. I wear them with socks.