i don't know if i agree that clerics shouldn't be able to wear chain..lookin in the player's manual of a d&d book...they're wearing some plate armor..

Right now it's split up.

Aramon is leather and Enoch is plate. Seems weird.

Honestly I wouldn't mind Aramon being set at chain and Enoch as plate, as long as Aramon received some kind of hide/sneak bonus for using lighter armor, which they may. The same goes for Arachnus.