Lifesaver skinweave is one kind, Wisdom. It's the Lifesaver option to SKW. Uhh..Chrome 2, iirc?
The looks thing, jokes aside, really varied from Ref to Ref. The book has no mention that it's disfiguring, which it does for the heavier SP14 variant. Pain-wise, heh, it was always fun to nail skinweave kids with flame weapons, eh?
"But I have SP 12!!" "Good for you. You're wearing clothes, they are on fire. Your skin is blackened and crisping and you're in agonizing pain. What? You didn't complain when I let you feel the guy trying to pick your pocket, so stop complaining! Also, stop, drop and roll. Away from the gasol..never mind."