Have you shaved with an 11/8? In my opinion, they are ridiculous. They aren't meant to shave with, but just to show everyone "hey, look at what I have". I made a 10/8 and shaved with it a while & ended up taking it down to a 8/8. That's the sweet spot, you can move them around and enjoy the ride...like a Mercedes or Cadillac.
Like mentioned above, do your research on razorsmiths. Big razors like that, there are really only a few who do quality razors of that size.
Is this just a fishing experiment?