A common action in our company (not SOP as far as I know), is to set the reciprocal radial in to the localiser on the DIR page, and then pull heading (so that it won't turn onto finals if you haven't been cleared yet) to get a good visual representation of the extended centreline. Of course this is only at the very end of the approach, and I'm quite happy to get rid of those superfluous waypoints at other times.