To really put them to the test, I wore them on a hike (OK, it was only 3 miles) and then went down to the beach to cool off afterward. I didn't have any issues with their performance over the hike, and it was nice not to worry too much about getting them wet as they would dry off right away. Had I been wearing another pair of shoes I would've needed to be much more cautious about where I was stepping.
The beach was a bit more challenging. Due to the crowds for the 4th of July weekend, the sand was not packed at all, and I gave up on the huaraches pretty quickly as I felt I was shoveling sand with them. I don't think this is was a shoe-specific problem. On the sandy parts of the hike they were fine, so I think any shoe would have had issues on the beach that day.
I don't seem to have any pictures of the shoes that day, so here are some pictures from the trip. You'll just have to believe me that the huaraches took me there!