I don't currently own a razor with a worked spine, but I find them very attractive and would like to own one someday. I've always wondered how they could be honed or stropped with an X-stroke.

For really fine-grained fileworking, I suppose tape would work. But I've seen razors with two big "waves," kind of like crescents along the length of the spine. Would an X-stroke be out for those, and they could only be honed on a wide stone?