Plenty of people roleplay things their model can't really do. Like my main character's supposed to be a pureblooded Garlean. The thing to keep in mind is to avoid the clearly racial/tribal characteristics. But also I mean, it's not impossible that there could have been mixed blood or recessive traits. I don't think anyone's going to be so strict as to metagame and tell you you're the wrong tribe OOCly.
