I've tried them. I don't like them for one simple reason: They tend to get slippery when wet. I had a hard time holding on to one of the ones I was testing out when the handle got wet--something I don't encounter with my usual knives.
they come with a lot of hype, but the fancy wavey pattern you seen on the metal is just that...a really cool artsy overlay. As for their performance, you cant test them all sealed up in plastic as they are sold. Nor can you hold them to test their ballance. If you can't test a knife's heft and ballance in your own hand, you will not know if it is right for you. Don't buy it.