It's funny, after reading you guys' replies, I realized that I doubt I know what "cloth" really is. Just like I didn't know that there was a diff between a sofa and a couch. For all I know, "cloth" might be an actual 'thing' rather than a generic 'thing' in the way that I throw it around.
Here you go.
Cloth: Woven or felted fabric made from wool, cotton, or a similar fiber.
I guess under that definition a Rovner lig could be called 'cloth', in that it appears to be woven, but it's a rubberized fabric of some sort, not very similar to wool or cotton.
Anyway, regardless of what you call it, not all Rovners are the same. As I said, the Versa has a metal plate and does as good a job as any other lig that fits properly on a mpc. I only mention it because seems to fit a wider variety of mpcs than most other ligs, probably because the flexible portion is flexible enough to conform to various shapes. So if you're having trouble finding a lig to fit on a given mpc, the Rovner is a good option to try. And the metal plate on a Versa holds the reed very firmly to the mpc table, which is what a lig is meant to do.
But I have seen two-screw metal ligs on Bergs, so no doubt you can find one to fit that would do the job.