It's coated on a thinner base than 4x5. I think Ilford said the same as 35mm. The only width available right now is 8". Ilford is willing to do other sizes but you might need to purchase the entire run.
I am buying 2 rolls of the #8, but I wonder if anyone is interested in a #10 Cirkut run as well. If I understand correctly, there is a 10 roll minimum to Ilford. I think I could go for 2 if there is enough interest for 8 more.
I hope I have the info correct.
There is some talk of a Harman price increase. Now could be the time to go for it.