Dpending on the manufacturer and the airline's choice of pin selectable options, the usual default is attitude - other steering signals are mixed with attitude anyway. So for example, with no glideslope steering - the V bars give you the pitch attitude hold that the glideslope signal would have been mixed with anyway, while giving roll steering to follow the localiser.
Don't bother with the F/D despegue? On complex aircraft, with auto-land capability the Captain and F/O's Flight Directors should be used for monitoring the signal activity of the 2nd & 3rd channels. Its a majority voting system, you see. Best to know what all three of the channels are up to...