but I've never come across anyone who does it in biz-jets, (even though the ops manual normally allows it).
We do it and I don't like it. I much prefer selecting what i want to listen to.
As for headsets, I love the QC15 with Iflymike, although word of warning for anyone purchasing one, they have short and long mike booms, the short boom is not suitable when you want to have the headset on your right ear.
mutt