Whatever punishment the FA dish out to these two--its almost certain ,with all the publicity this has recieved, referees will surely be given new instructions over how they tackle offensive language on the pitch! I cant remember players getting carded or sent off for swearing alone, but the FA are conscious the game's reputation has suffered over this! Managers and coaches will have to drill squads into prettying up their dialogue on the pitch!
If it is in the laws it ought to be enforced. I agree with Chelsea Pensioner's post at #2 above