Robobum
Money List Winner
Not really being bothered either way about this whole argument, but I can answer this point. With someone stood behind your back, if you can't see them, you have no idea if they are about to make a noise (accidentaly, not deliberately) by getting something out their bag or suchlike. If they are in front of you, you can see if they are making any movements before you swing.
I think.
What would you do if they were in front of you and making a noise in their bag that you can hear?