I hate to say it out loud, but I think double austringers is a trap. Then again, I think core lists are a trap. There are very few schemes or strats where they'll be bad, but to go into a game thinking, "Okay, I have 33 stones to play with after glowing saber, badge of speed, promises, and two austringers"is limiting.
Again, I'm not saying that I don't usually take one. There have been games where I didn't and I wish I had. But there have been games where I did and ended up thinking, "You know... a thunders brother right here would've been great..."
Food for thought.
Eninja