Not quite in the same league, size-wise, the Pilatus Turbo Porter could be put into beta mode (not exactly reverse, but similar effect) while in flight; the Sultan of Oman's Air Force, back in the '70s/'80s at least, employed this technique to achieve unbelievably steep approaches with a a "landing run" of 10m or less. (I think it was beta rather than reverse, but memory fades, as usual.)
I can vouch for the fact that for a right-hand seat ex-pongo passenger it was a truly terrifying experience, which greatly amused the monosyllabic and hungover Polish pilot doing it, one morning at daybreak at an abandoned and very sandy strip about 100 miles SW of Nizwa.
Last edited by Capot; 14th Feb 2016 at 10:16.