Aussie triannual vaccinations

[cazza03]

It seems we're just getting into the 3 year swing of things.
My visiting vet friend has told me the 3year one is a C3, the kennel cough and dog flu still have to be done annually, but it's nasally(or is that the wrong word?) done, so it's harder to overdose the dog, and no extra needle holes!
Can anyone see a reason why an organisation wouldn't accept him with vaccinations done this way? He'll have to have an annual health check anyway, I've always thought over vaccination harmed SDs rather then helps.