I have Vandal Twitch, Pentakill Sona, and and Headmistress Fiora, outside of the free one I get for fllowing Riot on Facebook.
I SHOULD have Unchained Allistair, but I have not idea why I don't.
Also: one of these days, I shall probably acquire the awesome Nunu Bot.
The only bad Vandal skin in my opinion is Jax.