weelllll - I ordered my M3P on Jan 14 - and bought a mobile connector at the same time.
I picked up the car this past Monday and there is zero evidence that Tesla has done anything with my order. I do not have my mobile connector - but I do have the car. Thankfully there is a supercharger a mile away - and we have a mobile connector from my wife's model S and a 50 amp wall connector . . . .so I'm in no fear of running out of juice. . .