There are some 120 and 70mm cameras around - seitz roundshots, hulchers, and probably a few others. A photo of a roundshot is on my web site -click on roundshots
http://www.jamieyoungphoto.com/cameras1.html
they are I do all my color pans with a 70mm and 35mm 1990's vintage roundshot. I often make 8 foot long prints from the negs.
One can cut down 9.5" aerial film - I'm planning on doing it for my 7" al vista and 6" cirkut. You still have to rig up a cutting jig to do it well. It's important to get a clean cut. Cirkuts run better when the film unspools smoothly onto the drum. A change in tension from the spool to the drum can often cause banding.