I've had it for maybe two years now, still growing in a 12-14" pot in a half-shade kind of situation. I can't say all that much about it, other than that the bloom form always looks as in the above database images, and the blooms always open well. It does rebloom here, but I don't know if it reblooms more than once. I have notes on the mini-clump from 2016 that seem to indicate 3 distinct periods of bloom, BUT I don't know if that was 3 scapes coming from the same fan, or scapes coming from different fans at different times. (I do have to wonder at the name 'Clockwork'.... does that imply that this thing, in its home garden, rebloomed "like clockwork", indicating multiple rebloom cycles? It would be nice if someone in FL who has it would chime in!)
It hasn't really been exposed to rust here, so I can't comment on rust resistance.
The scape is rather short for my taste, but I do like the flower form (which I believe has been referred to as the "Kaskel form") and color. The color, however, does bleach out here during the day; the image below was taken 5:05 pm on 9-27-16.