I've seen a thread or two on this topic, but they're pretty old. J cord IEMs are where one cord leading to the (typically right) driver is longer than the other, allowing one to wear the phones with the excess cable looped around the back of the neck. I greatly prefer this design to the...

http://www.crunchgear.com/2011/06/23/monster-announces-washable-isport-and-true-to-the-music-gratitude-headphones/   So apparently Monster is coming out with new IEMs designed specifically for live music. From the site: "Created with the help of Earth, Wind, and Fire, the Gratitude...