So here's the verdict after watching a part of the SXSW performance: They're a hell of a lot better than when I saw them back in 07. I especially liked the fact that they arranged the song differently than they did on their albums.
With that being said, I STILL don't like them enough to sit there and watch them for a bloody hour and half (I only watched a part of the videocast). Again, I'll probably watch them from the hills if there's nothing else going on around the time.
EDIT: I watched a little bit more of the performance and I gotta say, I'm with HG in terms of the audience. Chicks yelling "I LOVE YOU <Blank>" is one of my biggest concert pet peeves and there seems to be way too many girls wanting to suck Conor's dick for me to handle. Again, this probably won't be a problem if I sit on the hill
On another note, the word "Jejune" was in my Essential GRE Words flash cards. Enjoy the show Switch!