Yet, I had a newbie (week into the game) ask me why and, if so, when he should start playing under WHM as CNJ had 10 role skill slots verses 5.
It wasn't hard to explain, but at level 35, those 10 slots look better than what little a WHM can access differently from CNJ.

Job quest given spells aren't listed under "actions."

(That might be a contributing factor to the small population of players that never get their job crystal popping up in later content. Some are obvious trolls, but others are very much misinformed.)