I've debated on calling an emergency before for a 3 engine, at least when I was over seas and didn't feel like dealing with foreign ATC. Then there's dealing with the AF when you land at one of their bases 3 engine. They roll the whole rescue team and make a big to-do about it, very irritating. Rather amusing watching some dude in a silver fire suit walk around my plane in the desert, inspecting my nicely FX'd engine, which hadn't been running for nearly two hours... I bet that suit was f'ing hot!