Draven
Pioneer
That's a problem for the players to work out, then, and hopefully wouldn't come down to a customer service issue.
The rules make no exception to playing your Race, regardless of whether you Racial Transformed into it or not, so while he might get away with it for a while, eventually someone should be stepping in and saying they're not playing their Race correctly and that something would need to change, although how long that would take is up to individual chapters to figure out for themselves.
But an Owner literally just said that it’s okay for them to do it, even though other Oathsworn would likely frown upon it.
That means that I, a Marshal, cannot tell them they’re playing the race incorrectly, because the intent is that the freedom is on them, so any consequences must come from IG.