Thank you everyone So to answer questions...
Their ears are a bit bigger than most cats and part of it is the optical illusion because of no hair. (reminds me of fox ears.)
They are prone to chills but its easily fixed by just having a little cat bed and a blanket in it. A rule of thumb is just if you'd feel cold in a room naked then it might be a little cold for them but I've had no problems. They eat a little more than most cats to keep their body temps up but its not like you really notice.
Their temperments: they act like dogs. everyone that has met him says he is the coolest cat they've met (even hardcore cat haters say he is like a dog) . they are pretty stubborn but i don't think much more than most cats.something catches their eye and you move them away, they are coming right back. seem extremely smart. especially good at gymnastic type stuff.if something catches their eye and you move them away, they are coming right back. They are extremely playful and people oriented. They get pretty lonely so a lot of toys is a must or just have friends over.
People who are allergeric: they are not hypoallergenic, what most people are allergic to is a protein in cat saliva which still is produced by the sphynx cat, which is spread by cat hair and all that so they can be fine with mild allergic people. My gf is allergic to dogs and cats and she is fine with him unless it is prolonged, he loves to cuddle next to her face and lick her or he lays at our feet under the covers at night. after getting him i don't think i could own any other cats than a sphynx. they're so ridiculously lovable.