Some stick out a lot like the Sony's. I like the Sennheiser way better. And sound. Head-fi has a massive thread on true wireless buds. Check it out then get a pair.
Best tech/gadget investment I've made in a while is my true wireless buds though. I live in an urban area plus have a dog, so I walk a lot and sometimes take public trans. They get a ton of use.
In the hot weather they don't make your ears sweat like over ears. In the cold they fit under a slouchie hat. The portability and lack of wires are a given bonus.