A current thread from Ilford's Simon Galley asks if any LF/ULF people would be interested in Delta 3200 sheet film. See below
Maybe you can convince Ilford directly or via JandC or ??? to save some 10" wide roll ends for Cirkut use after the short sheets are cut.
I don't shoot Cirkut but I do enjoy looking at LF panoramics and I know the pain involved when a process is lost due to lack of materials.