I read this in 1992-93, maybe... The setting was our solar system, which humanity had explored thoroughly and settled somewhat. There was a group of people who elected to live permanently in space suits, where they were perpetually exposed to space in orbit of a gas giant's moons or something. Because of the exoskeleton-like suits (and maybe they had claws?) this particular group of people were called "lobsters."
Does anyone know the name of this novel/short story or its author?