User blog comment:Zathronas/Analysis by an author: Volume 2 episode 11: No brakes/@comment-25195920-20141024015616/@comment-25195920-20141024020739

Let's be honest here, they wouldn't work with Roman at all if he wasn't providing massive amounts of Dust and other gear. But a proven person completely loyal to their cause who just happens to not be a faunus? i can see some of the more peaceful members from the old years accepting someone like that, especially since the White Fang didn't go dark until later and actually started out to promote equality.