I disagree at "only business address"
because they claim the design to be Swiss. I don't see much Korean in the design, but that could be prejudice. On one place of the website they blurb as well about Swiss as also Korean precision on another place...
If I made a correct research, they are involved in "Neutrino coating", the TH Swiss AG in Baar/ZG was founded 2015 (!) by two guys and another guy is a representative. Interesting. Appears to be a start-up.
I agree, the prices are far away from Alpa, Bolex, Elinchrom or ArcaSwiss (which don't have much to do with Switzerland anymore).
The pictures are quite good on their website and the line-up of accessories show also some sense of practical things. So, if I were in the market for a reasonably fast ultra-wide, I would give Irix more credit than Samyang - but what, if Samyang just decided to create a "luxury brand" like Volkswagen did with Maybach or Bugatti? Alright, it's an exaggerated example. But still, it looks cool and serious. And if the pictures were really done with that lens without much correction, I'd say they are impressive enough to be curious at least.