I'm sorry if this is a repeat.
There's a minor bug with this, I can see the "Sellsword" perk complete with description when picking a sorcerer.
I don't know if it would actually apply the fighter perks, (depending on whether all these conversations are referring to the same script file or not) but I thought I'd mention it.
If a perk is not working often a rest will solve the problem.
It won't apply the fighter perk and is a bug.
Sneaky, and totally in line with the perk's behavior.
Fixed.