Spikey, that's exactly what happened at Orange when a REX RPT and an IFR Baron were performing instrument approaches from different directions in IMC at the same time.
I dunno Dick, that just sounds like plain stupidity on someone's behalf (be it the Baron or the SAAB). Why would anyone, with any common sense, commence an instrument approach in completely the opposite direction to someone who's already doing an approach?
Doesn't matter what the radar coverage would have been like, they were OCTA and I assume talking to each other, so it's stupidity on the pilot's behalf. Not stupidity on the behalf of someone in an office in Canberra.
morno