People allergic to cat dander will be allergic to the saliva from sphynx. But you can follow the same protocols to ensure less problems. I live in Nova Scotia, Canada which has very cold winters - it can be -20 now and then and has gone to -40 with the wind chill. "My" sphynx - foster kitties though I have them due to a living will but I call them fosters in the hope their mom will come out of a coma - wear sweaters galore but they never venture outdoors. They have a plethora of sweaters - kindly made by relatives, my patients, the ladies in the hospital auxillaries (We have to keep Dr. CK's kitties warm, lol) and friends. I have also bought some.
Sphynx are very friendly, not unlike my Siamese and love to be with people. If you have one, you will want another - they do not like being alone. They also love to climb and one of mine climbs up one side of me and down the other, lol (Usually when I am busy and getting dressed, heheh)
Which one in the picture is yours? Will you show them? Mine are champions and love the show circuit!