I have a Den. sulawesiense. At this point my longest cane is about 2 feet long. I don't stake but let it naturally cascade. I keep it hanging and not on a bench. It blooms once a year but over an 8 week period. I keep it in a small pot of fast draining medium. It does not go totally leafless but older canes are leafless and it usually will bloom from the leafless canes.
Victoria, I guess you could gather the canes and tie them upright for the winter. I decrease water in the winter but I don't give it a strict dry rest.
I don't grow mohlianum but both are similar...sulawesiense is vivid pink with a red lip and mohlianum is orange with a red lip