Guys, regarding "strange to put Serafen barb-only".
Understand, not everyone in the game uses their innate abilities in combat. Serafen was never shown to use cipher-abilities through dialogue via combat-ish ways. So, the way I see it - the game lets YOU decide, whether these psychic abilities are combat-oriented, or just outside of combat, and letting him be a full barb.
I like interpreting the game that way, sinse I chose to go full barb