TS
My next door neighbour is an A320 driver, so I'll ask him about in flight reverse the next time our paths cross.
The Trident could use reverse and from altitude too - my info source is T3b sim time with an ex-Trident pilot.
It was impressive in the sim, fom BIG at FL150, it was no sweat to make 27L at LHR, but I guess it would have certainly got the attention of the pax
Arthur Whitlock's book, behind the cockpit door, also relates an emergency descent into Palma, from FL30 odd, using reverse to hit the profile.