Last bike I sold had them, I did tell the buyer, a young man who may have never seen them before, that they were fine if you were on a flat road going 5 or 10 mph but not to rely on them to stop you if you were bombing down a hill, ha I left the dork disk on too, although its chrome and I cleaned it up as part of the refurb.
IMG_2894 by
Ryan Surface, on Flickr