I fly past Avalon quite a bit, always in G, just for the sake of peace and quietness. I'll be there again soon and plan to whistle straight through the E, just for practice, and it will save me 5 minutes. I might submit a flight plan but will definitely not initiate any transmissions unless called upon. I think that if we are flying in E we should adopt E procedures, even if we think that there are other "good ideas".
I see that there might be some problems, southbound, if you are flying near Barwon Heads, one radio, might be a late change to the CTAF.
Will be happy to report my experience.