I normally use derated thrust, as per our SOPs. If, for whatever reason, fuel is getting really tight before departure, I remove the derates for TO and CLB as for this particular type it gives the lowest overall fuel burn for the sector at CI=0, assuming an unrestricted climb.
Yes, it produces more engine wear than normal but the other option of returning to stand, shutting down, refuelling and starting up again probably puts more stress on the mechanicals. The delay to the flight and the knock-on costs need to be taken into account as well.