Not a combo press, during the press part there is still the same type of fouling going on.
I am talking about an option to be less aggressive defensively to avoid fouls. It could be used in every defense, but would be most useful in the press.
A combo does do less fouls but that is only because only 1/2 the time you have the high percentage of fouls and 1/2 the time its a lower foul percentage.