Small update - I've done most of the cloth on the cadian-pig-iron hybrids and some of the extreme highlighting on the armour and I'd forgotten this since last time I did a unit of these models. I find cadians to be an absolute pain to paint. I'm not sure what it is about them - maybe the ridiculous number of folds in their trousers, their jacket "skirts", their weapons or the whole arms-getting-in-the-way deal... Probably a combination of them all. I'll be glad to get back to the Pig Iron minis, once this squad is done.
Am I just an isolated case, or do others share my dislike?