Rules are rules. Overclocker is overclocker. There is no official definition of "overclocker" in a dictionary, but regarding the fact it's HWBOT I would create one:
"A person who pushes hardware to the limits using non conventional ways of cooling ( for instance: Single stage/Cascade/DI, LN2, LHE) and make results public (in rankings or computer forums)"
Meis is not an overclocker, I didn't see results by him on polish forums or foreign (like XS), no rankings (HWBOT), didn't hear about him earlier. So in my opinion Asus will follow rules, if he won't pay for his ticket/accommodation. But to be fully honest - ryba should be allowed to change a teammate for real overclocker from Poland (if he wants).