Note:
This means, if you go to Travesty as a group, that NO ONE have any discord - not even a few random points on jewelry. I've personally seen an instance where everyone had 0 real Disco, but one person had a bracelet that had less than 10 disco skill, and somehow Travesty got disco powerful enough to disco the tamer, when they copied that character.
They might have fixed that (this was almost 10 years ago), but then again they might not have. Better safe than sorry.