Unfortunately, they do not have a reputation for this. Unless you have hard evidence that would suggest otherwise. And I mean screen caps of conversation or hearing them in voice chat. Other than that, all of this is circumstantial.
This is an unfortunate scenario where it is not prohibited to have accounts in multiple nations, nor is it to have clans in two nations. Magic clan in the US was famous for their shenanigans pre-release. But then again, they could argue it was all circumstantial, as there was no hard evidence.
Hoping Waldron provides some clarity.