I've finished a long-winded review that may get up at headfonia next week. The short: apart from the cable, which I hate, the earphone is nearly perfect in every respect.
I ended up borrowing it for a day or two too long and may have to purchase it because of that (this is Japanese culture) but I'd be very happy to do so if I had the dosh.
Minus the cable for is great. With my favourite neutral filters in place and sound ploughing through the yellow foams, clear, detailed in both top and bottom, and wonderful 3D sense. Layers in mids not up to 334 level, but balance is better.
This is a very serious, very good earphone, which reeks of a quality the universal iem land hasn't met before.