Hi! I have a Chi-mix. He's (as far as I know) Father: full Chi, Mother: part chi, part Pom.
His brother (who has long hair on most of his body) was recently labeled by a vet as a "rare pure-bred long-haired Chihuahua." The mistake on her part, I assume, is that she had no way of knowing the lineage, and was incorrect. The long hair comes from the pom line in the mother.
Is the vet correct?
Could I technically call George a long-haired chi? He looks just like images of them. Not that I'd want to, to me he's just a chi-mix. I'm not that pretentious.