Most interesting. I'm already thinking to my future upgrade from my much appreciated Vibes - not imminent but inevitable - a guy can't stand still

- and I'm thinking full isolation and have been honing in on the UM2s. Now this! We may have another leader. (It certainly makes it easier to believe that Westone will edge out the Shure 500s for my purposes.)
As for the inline volume control, as someone who commutes to work with my iPod pocketed in its leather case, this is a potentially fine feature, especially when listening off a playlist or shufle. The question is the quality of the pots. Shure went with a low-end design explicitely for airplanes only (I ordered one but don't use it.) We will see if the Westone is better. That's at least possible and very intriguing.