Sphynx has fur, just very short. Feels like velvet. Because the fur is so short, it must also shed, just not noticably because it is so short.
Most cat allergies are not from the shedding fur, but from the dander or skin particles, which they all will shed.
I believe it is important to determine why less shedding is preferred. If the concern is allergies, the amount of shedding may not make any difference, as the allergies is due to the enzymes in the cat's skin and saliva. But if the concern is the mess of cleaning up the loose fur, then it depends on the cat. I have observed that most short-hair cats appear to shed more than the long haired ones because the shedding cycle is more frequent and year around. My long-hair needs constant grooming during her molting season which is about March-May. The rest of the year she sheds very little.
ETA: This about a similar breed as Sphynx:http://www.catsofaustralia.com/devon...escription.htm
DEVON REX HYPOALLERGENIC CAT?
Despite popular myth, Devon Rex do shed (as does anything with hair
), although their unique coat may make the shed hair less obtrusive than that of many cats. Devon Rex have also gained a dubious reputation as being "hypo-allergenic," but this varies according to an individual's personal allergies. While some people with animal allergies tolerate Devon Rex very well, anyone with allergy issues should arrange to handle a Devon Rex before considering acquiring one.
More Reading: Hypoallergenic Cat Breeds