I ended up swapping my order to the KSE1200. There's a lot going for it, and no ETA on the Sony's in sight for the US. Also, the ambiguity gets to me too. These things are so elusive, there's not enough impressions/comparisons on them yet. Maybe in the future I'll look back, but not a good call right now unfortunately. Good luck gents.
FWIW e-earphone website has many pages of 5/5 reviews, it's in Japanese of course but you can get a fair sense w/ Google translate.