I spoke with a guy today who hit a rotor off the lee side of a mountain last week in his wood wing Bellanca... Once he was upside down he reversed the aileron controls and went through the full roll. I don't know about you but that would scare me...
I had that a few years ago going to Caernarfon, flying in the lee of the Snowdonia hills. I didn'y actually get inverted, but I was quite unable to control the aeeroplane; we were tossed around in all 3 axis and the controls were pretty much ineffective in trying to keep the Chippy straight and level. So severe was the disturbed air that wisps of cloud were forming and dissipating around us in the rapidly changing air pressure of the rotor.
Eventually it spat us out. We landed at Caernarfon shortly afterwards and the surface wind was a few knots; the windsock was hanging down the pole. That's why I hadn't expected rotor - no wind!
There must have been some odd metreological conditition funneling air over the hills in a venturi because there sure was wind causing that rotor!