[@Mega Birb]About every motif is used in some form, honestly, so you can make what you want. Though if I am being honest, a Cavalier or Rogue is probably the least taken among the group. But Drabarian works, if you want. 

[@Fetzen]A Drabarian would have some knowledge of Dragons in general, but no more than someone well read (other than small exceptionsl, and he wouldn't know this particular Dragon.