Incanters in Society

[PK]

Originally Posted by Greg 1

If there are enough incanters,

Do note that the incanter's Unusual Background is more onerous than the psi's, implying that (as of this writing) the incanter template is the rarest type of adventurer. So it's safe to assume that any DF world will have very few incanters.

I agree with the rest of your post, so to me, that suggests that incanter viziers are often the "secret weapon" at the sides of the most successful rulers. They're probably a precious resource, sought after by anyone who wants to lead (or just better the lives of) their people.