I think that the term "warmth tolerant" is misleading. Except for a few high elevation Asian species like goeringii, I have never met a Cymbidium that isn't finewith major heat.
Agree. My cymbs are outside year-round and they grow very well in a temp range of 0-40ºC (32-104 F), ocasionaly outside of this range in both directions.
They are spiking now.