I was beginning to feel like I'd lost the plot here, as I always remember the walk from the business class entrance to the Wing being miiiiiiiiles away from the BA/QF gates.

There is one other advantage of using the QP at HKG if you're running late. At least the agent in the QP knows you're there if you are leaving it until the very last minute before heading downstairs, and can if necessary phone down to the gate when it's hysteria-for-the-last-pax time.