I once asked a Tacamo guy if they ever shut one down for loiter and he looked at me like I was on crack.
She flies just fine on three. Two on one side is manageable, but wouldn't wanna do it for long... Like was said earlier, it doesn't buy us any efficiency points. Whatever... We don't fly the jet like it was designed to be flown anyways. Also, you guys' idea of loitering is different than ours. We don't get "on top time". Just "OMFG, I'm sooo bored!! Where's my Ipad/book/rack?" time.