Comment 11 for bug 689733

Well if this ends up one way or the other only (all spaces or just current) and nothing like a modifier key available then it would be nice if this could be done as a gsetting (value all or current

If it does end up as 'current space only' from the icon (no user mod available), then at the least it should be d. checked that a keyboard binding can be set and works for "Window Picker For Window Group"
(currently it cannot be used in a keyboard binding and atm no need, available from launcher icon.