Not recently inflight in a B777, but he did on his home flight simulator on 21Dec2013 in a Boeing 737-800
Thanks for answering that.You're dodging another question though, namely about what's your experience of operating in this enviroment? Just who were the "20 crew room occupants" you polled? Do they have any experience of that environment? Given your dogmatic and emotive reasons for contending that MH370 MUST have diverted towards Penang and how this destination is essential to your suggested scenario, I'd really like to know.
A statistician would have a field day with the validity of either of our polls (insufficient data base for one), but I was very careful to pose your scenario as objectively as I could and individually, either in person or on the phone. I'm very wary of crew room Group Think - you should be too. My pollees comprised 4 current pilots and 3 retirees (4 Check Captains, 1 Training Capt and 2 Line Captains), all of whom have flown in that airspace. And yours were...?