Only 100 Skyes on average are registered with the Kennel Club each year. Eenquiries for new homes tend to be from people who have already had one of the breed and are looking for a replacement for an old dog who has died. They can have quite large litters of 6 - 8 puppies. Perhaps it would be better to get another puppy from a specialist breeder if you want a companion for your pet. Generally, Skyes are very healthy dogs and given a good, balanced diet, plenty of exercise and mental stimulation, should be no more prone to ill-health than any other dog.
Skyes are a robust breed that is relatively 'problem' free.
Always seek the advice of your vet or the breeder if you are worried. There are no particular inherited diseases that are currently causing concern in the Breed. Two dog puppies, growing up together, will almost certainly fight when they are older in order to decide who will be top dog. You may need to get one, or both, neutered to help avoid this. Generally, we don't recommend people should have two dog puppies.