I agree, and I'm sure you're right. It's just unfortunate they don't offer a limited slip through TRD or Scion. It gets really annoying when I'm traversing a grade and I get two wheels in the air (happens a lot now with the SS-P suspension) and I hear the engine race while one tire is in the air and just spinning to beat hell. The unfortunate thing is, even a Quaife won't help with that because it is a gear type LSD, and all the gear type LSDs (except Torsen R models) will act the same way when a wheel completely loses traction.
I'd really like a clutch type LSD...it's what I really need.