They pretty much need the same care as a guinea pig with hair. They are allowed to have hair on their feet, nose and ears. They need special food with extra vitamin C but that is standard guinea pig food availabel at pet shops. They will need water all the time and something like hay to burrow in. Obviously they need to be kept warm and as in any rodent they will need hard things to chew on to grind down their teeth. They can crossbreed with any other guinea pig and will only produce more skinny pigs if the other guinea pig carries the gene.
http://209.17.131.1/index.asp?ct=1&ch=1&it=10
Oh and they cost a lot compared to a standard guinea pig.
http://209.17.131.1/index.asp?ct=1&ch=1&it=10
Oh and they cost a lot compared to a standard guinea pig.