Don't know much about them, nothing at all really, but from what i've read you'll need at least a really well fenced garden which you're really not all that concerned about as they can and will root up the entire area, as well as making every effort to escape. As cute as they are and as small as they'll stay I wouldn't recommend having them as house piggies at all.
Looking at pics though they are unbelievably cute, but I'd assume they are very high maintainence,and if you live in a town and should you need a vet for them at any stage, would your average vet know anything about pig husbandry?
Personally I'd stick to just looking at piccies of them.