Let me begin by saying that I'm not a novice do-it-yourselfer. I've tackled multiple flooring installations, among other larger projects, but this one was, by far, the toughest. I'm not blaming the flooring, as it's entirely possible that I wasn't doing it right. I did do some research, though, watching videos and reading the instructions.
My problem was, I had a tough time keeping the joints lined up. I pulled up the flooring halfway through the project three different times, as the grout lines began to no longer line up. It seemed that even indiscernible gaps in the flooring tiles led to very noticeable gaps later on down the line. That said, the tiles were easy to pull up and reinstall.
Finally, as I neared the end of the project, I gave up and used vinyl floor grout to fill the gap on a few tiles. Again, this was possibly "operator error," but was frustrating for an experienced handyman. I did end up with a very nice-looking floor and the aforementioned gaps are hardly noticeable with the added grout.
With that said, this appears to be a very durable and well-made product. When the tiles match up properly, it's easy to see how it becomes water-tight. The grout lines "mash" in, leaving a filled seam that appears very solid. The surface is solid, has a good feel, is easy to clean, and simply appears very durable.
Overall, I like this product. I bought $1000 worth of this flooring, sight unseen, based upon reviews and the online images. The color wasn't quite what I expected. Despite being described as "sand dollar," it appears a bit more gray than I expected, as I anticipated more of beige color. Nevertheless, it worked fine for my kitchen. I did have to apologize to my wife and son for a few errant words during the installation, though.