Maybe this has been done before, but I've never seen it. The frets are "wiggly" in an effort to improve intonation. I can't link to it because Kenny's site sells guitars direct, but if you go to his site and click on the "performance intonation" blurb on the home page, you'll see it. Just wondering what everyone thinks of this approach.
Daniel Friederich did something similar in the meantone (sp?) guitar, a guitar which featured individual movable frets. It ended up looking a lot like this guitar. Apparently it was very difficult to play. You can find pics on it via GSI; they recently sold the guitar.
Kenny Hill and his team tend to know what they are doing. Too bad there's not more of a background narrative on this guitar, whether it's a custom build or a one-off idea, or a new production line item, or whatever.
To be prudent, I think one has to stick with the original string type used in the design to keep the intonation correct. Any change in string's tension and/or brand will for sure have some impact on the designed intonation compensation. It's a rabbit hole to go down with intonation, I believe.