geradex: Since you dislike change... Could you imagine the trouble and poobrain from Bro and Fem getting body swapped?

Same pony means same brains. They know each other perfectly, and they know what the other is doing since they divide the jobs, albeit unevenly.

So fem would get to catch a breath out of her problems and bro would go mad with all the stuff fem deals with.

They don’t have different personalities, they just live different circumstances.