TTT, when Proyas (in Shimeh) is on a rooftop and throws his chorae at a Cishaurim:
Then a flash, a black-ringed circle of light, from which the saffron figure plummeted like a sodden flag.
It appears, maybe, that chorae have an equal-but-opposite effect on Cishaurim. Sorcerers are completely turned to salt, clothes and all (removal of all water from them?). Cish appear to be 'sodden' yet still 'burn' (becoming soaked or one with 'water'?).
Also, something that always bugged me: Moe doesn't flinch before Cnaiur places the chorae on his cheek. If he were a sorcerer, he would have sensed the thing coming toward him, but he doesn't. He only reacts when it
touches him. So, a few possibilities:
1) Cishaurim aren't of the Few (they can't sense chorae, even though they kill them, too; is there any textual evidence to support/contradict this?)
2) Moenghus was not one of the Few (if he were, he may have sensed it coming toward him anyway)
3) Moe was so absorbed with what he was doing (trying to save his own ass), he didn't sense it (hard for me to believe, as the Dunyain have demonstrated they can easily concentrate on more than one thing at a time).
Just adding fuel to the speculative fire.