MAN has seen the VIR 600s on diversion many times, and they will operate on schedule from MAN this summer. Etihad 600s turn up from time to time on the scheduled services and VIR, LH and IB 600s pass through for repainting.
That's true, but they aren't usually welcome to stay for any length of time due to the amount of space they take up on the apron and limited parking stands. Throw a 744 and 77W in the mix and you're out of options very quickly for parking at MAN.