For what it's worth, the Atomic keyboard has a similar layout, despite being ortholinear, and is due to have milled aluminium cases and PCBs later on this year.
Ironically, I plan to buy a kit myself when they're available, and am awaiting my Granite order especially for it
)
I'm also hoping they end up doing the same for their Neutrino plate design, I pm'ed the creator/initiator of the design an hour ago to ask about whether such plans exist
Atomic would never work for me unfortunately, there are too many challenges involved
Also, Although I really admire/appreciate the work/business of ortholinear keyboards, I find the keyboards to be a bit crude, again the cases are to blame here, as mostly they determine how a keyboard is perceived aesthetically