Sorcerers, if known to be spell adept from innate means, are not hunted/killed/banned by Dementlieuse people. I know its a subtle distinction but its also important. Its not so far fetched that a sorcerer will stand out to a populace that associates magic with antisocial genius people. Mostly because a sorcerer will not seem genius and definitely will not seem antisocial.
The source material makes this distinction for a couple of reasons that may not seem obvious. Sorcerers are usually much more charismatic people (easy to guess eh) and they tend toward flamboyant, flashy, ostentatious and sometimes even obnoxious displays of magical prowess. The persona and personality of the two classes are supposed to come across as very distinct and different. To a player its just a difference between INT-based or CHA-based and prepared or spontaneous spellcasting. But in roleplaying the classes I think many let the lines blur a bit and lose this distinctness. The two classes are more subtly different to behold face to face. Sorcerers are much less book-wormish, much more socially adept and likeable, quippy, charming even. A wizard might dress in drab robes, mutter under his breath, believe everyone around him is an idiot. A sorcerer on the other hand is at home among the people. He can work a crowd, charm the opposite sex, make a tavern room full of revelers laugh.
All I am pointing out is that both of the following things are true:
- Its not a case that the common denizen of Dementlieu needs to have intimate knowledge of magic to find a sorcerer odd (as compared to their own expectations of wizards)
- Its also not the case that once "outed" that a sorcerer is forfeit of freedom in Dementlieu. It just means that their usual ability to charm and be likeable is now trumped by suspicion. An already motivated group or person might then become hostile, but a muttered prayer to Ezra and hastily drawn curtains as you walk by would be the more common response. This can help the roleplay of the sorcerer if you lean into it, because nearly all sorcerers cannot actually point to the source of their powers their self. Its a mystery to them too, if really leaned into it can also be a source of torment and horror.
All of this should be completely applicable to bards too.
..And all three classes share real risk if they use necromancy openly.