Only a mostly-statist world would consider Paul Ryan a libertarian.
Also, here is my growing Romney fear -- that this guy shares many of the same assumptions as President Obama about the government's role in top-down management of the economy. So far, his rhetoric has the feel not of seeking freedom from state authority but instead that, in the context of top-down state authority, he will be the better, smarter manager. In other words, we are doomed. Which is about the way I sum up every Presidential election.