Interesting point about the weather resistance; I've read from threads on various forums that they're necks still really do need adjustment with weather changes. I was extremely surprised to read that, because I totally assumed they were like Vigiers, in which, in a YouTube video, the US sales manager took the neck off one, put it in a freezer and a sauna for a long time each, then reassembled the guitar, and it was perfectly in tune.
This was a reason I was interested in Kiesel, until I read several recent threads of horrible customer service. But they use graphite rods, that should help a ton.