Show Playback FPS, even when hiding overlays.

You know how you can hide overlays i.e. hide armatures, orange selection outlines, dotted lines, lamps, cameras, etc? I like to play my animations like this. But it hides the FPS too. I often have to show overlays again just to see if I'm getting full fps.

So it'd be nice to have an option to show fps, even in hide-overlays mode. Not super important to me, though. Focus on other stuff if this would take too much work.