Noo, just out of curiosity, what would happen if a person with say a 500GHS SHA asic pointed it towards a scrypt curreency. Probably nothing. But if so, what does it do? Cause stales for others, or anything at all.
Same thing that would happen if a person without a 500GHS SHA ASIC pointed it towards an scrypt currency. The only thing a 500GHS SHA ASIC does is SHA and whether you do SHA or don't do SHA makes no difference with an scrypt currency. SHA is not scrypt, so it works the same on an scrypt currency as anything else that's not scrypt, such as nothing at all, or addition, or whatever.