There used to be monitors made mainly for desktop publishing (remember that?) that swiveled to vertical orientation or horizontal, as desired, along with video drivers that adjusted to suit. I haven't seen even a photo of one in years. Seems like a good idea for some things, like editing vertically formatted images.
“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”
Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2
I saw them too! Think they were in a blurb "book", or maybe the latest View Camera magazine I flipped through last week? Can't find them now. They were beautiful.
I feel like the horizontal wide format is being thrust upon us by monitors and TV's.
Vertical shots just don't look good on electronics (merely because they get shrunk to fit so they become "tiny" in comparison). So if verticals were rare before... I am sure they are even more rare today.
With some googling I found the site I had seen recently seen with the circular photos I liked (I think it was linked on the LFPF.) I think it was in a post about a View Camera magazine article: