They sent me a preproduction pair to demo, a few months ago.
They're probably a good (and less expensive) alternative for people that like the ER-4 or q-Jays sound. But keep in mind that I only heard the prototype - I have no idea if they changed the sound in the final version.
That removable silicon memory "wire" is an excellent idea, and quite comfy. Hope they sell it separately, a lot of phones could use that silicon add-on for better around-the-ear fit and reduced microphonics.
Well, they're in a quite different price range (i.e. affordable for a lot more people, and really brilliant for that price), but of course for Head-Fiers the Westone launch will probably overshadow everything else...