Old thread, but seems like I remember someone (whodini?) showing good roping on the hems of a pair of non-chainstitched jeans, disproving the myth that roping is a chainstitch-only benefit. That post had to be from a while back, though. Yes, that was me. Don't remember where the post is but I have plenty of non-chainstitched jeans as well as chainstitched jeans that have roping. It has to do with how the fabric is slightly twisted when stitched. I still standby my vote for people not wasting their time tracking down a Union Special unless it's part of the service. You're not missing out on a damn thing.