I think the Airbus SOP has the light in “T/O position (both lights On)” for landing.
One drawback in this position is the light will reflect back in our eyes on approach in precipitation or cloud. Having the light in the T/O position in heavy snow can be especially disorientating.
Under these conditions you may want to select the light to the taxi position. Next time you are on approach in cloud/percip., play around and you will see the difference.