The Naibbe cipher

[magnesium]

3. Cumbersomeness. If people have issues with the complexity of the Naibbe cipher, a nomenclator cipher would throw them for a loop. 

It would. Moreover, given the string repeat stats and no obvious context dependence of labels, I'd say a simple nomenclator (with a single index for each plaintext word) is hardly possible. If I have one strong conviction about the Voynich Manuscript as a cipher, it's that there are multiple ways of encoding the same plaintext string. It's either that or gibberish.

Completely agreed.