Have to check these out. It's almost winter and I don't want to use my Powerbeats or Sony 1000XMs in pouring rain. For $50 might be worth a try to see how much rain they can take.
My concern was that the page on Apple's site didn't say anything at all about water or sweat resistance. Usually, Apple puts that pretty prominently in the specs, so until something specific comes out I wouldn't assume these are for heavy outdoor/workout use.