Curiosity got the better of me (as well as Best Buy's generous return policy), so I picked up the new Bose IEs.
Let me first say I owned the QC2s and sold them. The noise-cancelling worked fine, but I didn't care for the boomy low-end and murky sound signature. I tried a fellow co-worker's Triports. Didn't like the sound on those either.
But these IEs...wow, they're pretty good. Probably the best "buds" (since they really aren't meant to isolated like Etys and Shures) I've heard, along with the Sony EX90. The Bose IEs are very full and warm sounding, even at low levels. The bass is plentiful, but not overblown like the Sony EX71/51.
The Bose IEs sit in the cup of your ear, they don't actually go into them. If you try and shove 'em in like those of us who are used to IEMs normally do (to get a good seal), you'll just end up with low-end, boomy mush coming from the Bose IEs. Used as buds that sit outside the ear canal though, and the highs and mids come through. And I'm fine with them not isolating; they're not meant to, and they have a purpose for some of my listening situations. If I need isolation, I'll go to my Shure E500s.
I say give 'em a try. Along with Bose's 30-day satisfaction guarantee and other big box electronics stores' return policy (Best Buy, etc.), there's really nothing to lose if you're curious.