I see them mentioned quite often with PLD RPers and MNK RPers! (This is likely because I tend to see people RPing those jobs more often than the others).
For me, if I were to RP a job instead of a class, I'd probably check to see how available/viable it is. Black Magic, as stated by the game over and over is horribly illegal in Ul'dah and its secrets are closely guarded. White Magic is as equally guarded by the Elementals and Padjal for many of the same reasons. Allagan Summoner and Nymian Scholar soul stones seem to be a "if you get lucky while digging through ruins" type of occurrence these days, while many of the physical combat jobs and new classes seem to be more open to a revival of their lost skills/a artificially created stones, like MCH.
For Franz, I don't forsee him ever really properly tapping into the power of a soul stone. While he has managed to get a SCH stone, it's treated as an acquaintence's trinket. He keeps it close, but whatever form of "equipping" that's done for a soul stone, Franz is definitely doing it wrong.
For me, if I were to RP a job instead of a class, I'd probably check to see how available/viable it is. Black Magic, as stated by the game over and over is horribly illegal in Ul'dah and its secrets are closely guarded. White Magic is as equally guarded by the Elementals and Padjal for many of the same reasons. Allagan Summoner and Nymian Scholar soul stones seem to be a "if you get lucky while digging through ruins" type of occurrence these days, while many of the physical combat jobs and new classes seem to be more open to a revival of their lost skills/a artificially created stones, like MCH.
For Franz, I don't forsee him ever really properly tapping into the power of a soul stone. While he has managed to get a SCH stone, it's treated as an acquaintence's trinket. He keeps it close, but whatever form of "equipping" that's done for a soul stone, Franz is definitely doing it wrong.