Bone Isolation via Vertex Group Panel

Sometimes while rigging, and weight painting things can get a bit messy. It can get to a point where it is hard to tell where something begins or ends. I was thinking of maybe over in vertex groups we have a little eye icon that if you hit alt and click on it would hide all but that selected bone. It could already be a feature but I sure haven't found it. We could have one eye for bones and one for even meshes because I am having a pain with bones but someone may find a mesh version useful as well.