Muslims should be no more offended by the term "Islamic Fascists" than Italians should be offended by descibing Mussolini as a Italian fascist or Germans when Hitler is decribed as a German fascist. The use of the term "fascist" modified by the term "Italian", "German" or "Islamic" implies quite strongly that Italians, Germans and Muslims are not, generally speaking, fascists. Otherwise, we would just call them Italians, Germans and Muslims, and let the fascism speak for itself.
Absolutely, gridlock!