I have two, and one has bloomed a couple times but I have not found the blooms until they are spent, because I am very negligent in checking them. I think they are so shy to bloom because in my greenhouse they are in a shadier part and I can't really move them. They both have huge mats of roots under the bark floor.
Here are pics of the plants, no pics of the blooms, sorry.
One is growing up the concrete "tree" that my parrots nest in. One nest box (the blue door) is totally blocked off, hence the pruning. The second one is growing up a 2x4 trellis.
They are both about 14 years old.




