I finally have bloomed the correct hybrid! After a few 'Dentibarbs', here is Kleberbarb (kleberianum x denticulatum). Still a small plant with two small spikes, but an interesting lip form and colour contrast. And it smells like cat pee. And, no, I do not have a cat. Fortunately not enough to fill a room, one should simply avoid sticking the nose in there. I might have some fun over Christmas.
Jamie