Oh my word Jeff, you have made me turn green with envy. What a beauty.
I did know they were big ; there was once a dealer in UK who set out to fill a gap in the market by specialising in Catt species . I used to visit him occasionally and buy a few things - he used to visit someone in the States to get flasks, and then raise them. He had an amethystoglossa which I saw and loved , and yes, it was very tall. ( two feet as my memory of events 30 years ago runs ) I have not so far done well with plants which I have bought, of this species , and recently tried a couple of small plants ( meristems of the clone "Pink Powder Puff" )- bulbs only 4 or 5 inches tall, which I have put on branches. They are rooting well , but maybe when they are full size this will be difficult to handle because of the weight and size - how to keep the plant the right way up when it is the branch which is suspended , hanging from the line extending along my greenhouse. A nice problem if I ever get that far ! In the meantime I am reinforced in my efforts by the pleasure of seeing your lovely plant.