BSAA - from that METAR either runway would have been 'useable' but almost certainly 04 would have been 'in use' unless ATC had some odd restriction in force. I still think the reported PAs strange and were either misheard/reported OR a very dismal attempt at humour which appears to have failed, and would be well out of line with company practice. There is no way one would declare a "no go" as they "couldn't see the airport" in that weather. We'll have to put it in the unknown box, I fear. Seeing 'land' out of the port side does not help either as that could happen on either runway.