Skinny pigs are amazing pets, but they do require more care than regular furry pigs! The biggest thing being they have to be kept warmer and cannot live outside at all! I make sure my piggy rooms stays a minimum of 20 degrees in winter and 18 in summer, adding comfy cosy beds to the skinnies if needed.
They are eat more than a regular piggy, this is because they are burning more calories to keep their body temperatures up. They do need to be fed more nuggets or veggies than a furry pig, but they will eat though hay a lot faster! They need to be kept out of drafty areas. Along with eating more, the obvious consequence would be they produce more waste! My 3 skinny pigs are dirty little ones and poop for England!
Many sights advocate rubbing oils etc on their skin to keep it moist, but this IS NOT needed unless their is a medically diagnosed problem with the skin. They are very good at keeping themselves in tip top condition and if it isn't broken, don't fix it!
Outside time can be done, but it has to be warm enough in the shade for them to graze as they need to be fully in shade to protect their skin. Putting sun cream on them is not advised.
Other than that, they are just loud! It seems to be a skinny thing (or at least my skinnies!)
Please enjoy them though, as long as you are aware of the extra care, then they are just fantastic!
Hope this helps!