Most of the time when we gather round a table and roll up our characters, we tend to think of them in terms of their class name. However, nobody shows up to a job interview and explains how they have a dozen years of experience in the field as a barbarian. No one does an apprenticeship as a rogue. And generally, if you refer to someone as an "adventurer" that is usually a polite way of saying that they're unemployed.
With all of the options we have when it comes to building our characters, it pays to ask what job it is they actually use their skills to accomplish. Because sometimes you might have a choice that feels obvious, but other times you might wind up with an individual who uses their abilities in an unexpected way. For example, if you hear that someone is a knight of the realm, you might picture a huge warrior atop a fierce charger... but an evoker may be given that honor as surely as the most skilled swordsman, using their magic as a weapon in the service of their nation. One might assume a diplomat would be best served by a smooth-talking rogue, or perhaps a bard, but a paladin in their gleaming armor might use their words instead of their sidearm to try to settle disputes between nations. A sorcerer might make an ideal pickpocket, a druid a perfect actor and a barbarian might be the leader of the local thieves' guild whom everyone thinks is just some bodyguard or flunky that can safely be ignored.
It's important to know who your characters are, where they came from and what they can do... but it sometimes helps to ask how they've applied those unique skills, and what profession they're part of. Even if the methods they use to get results might be a little unconventional.
- from the publisher's blurb