Fringe--Anyone Tried This?

The recent message from Erin Eddington about fringe on the Hogwarts scarves reminds me of something I thought of a few days ago. I have never been much of a fringe person, so I'll likely never try this, but it occurred to me that it would be possible to make fringe in a way I've never seen done.

Take a crochet hook and slip stitch yarn to the edge of a shawl (or whatever) and make a chain twice as long as you want each piece of fringe to be. Then slip stitch to the edge of the shawl, right by where you began. Slip stitch over one or two stitches or spaces, then repeat the whole process.

I'm sure this would work, and I think it would be less likely to get ratty-looking, the way fringe on older items sometimes gets. There is nothing new under the sun, so no doubt someone out there has done this or seen it done. How did it work?