This sounds like a good idea and really more in line with all the other stats.
The first time I played the battle demo I didn´t get it at first until I reread the tooltips. So from my point of view wesleyshaver´s approach would be more intuitive.
"I am a Paladin!"
>OMG, Malthus, there are no damn paladins in Battle Brothers...<
"OK, OK! Then I´m a wrecked down minstrel drunkard pretending to be a paladin, singing so wrong in the midst of battle that even the undead run in fear... Better?!"