If (wing) icing conditions are expected which affect the wing, it's normal at our company to switch on the wing anti-ice on ground.
None is absolutely right - wing anti-ice won't work on the ground 'till you are airborne to avoid overheating of the airfoil.
Of course you penalize the RTOW on the segments, but that's taken into account when doing the T/O Data calculation.
So long, DBate