There's the old saw about how you pronounce Latin will depend on whether you were taught by Father Brown or Father Leary.

In areas where Catholicism has predominated, it's more likely that the ecclesiastical pronunciation will dominate. As I recall, the German exchange students I had in some of my classics courses used the classical pronounciation (their big weirdness was pronouncing θ as an aspirated t (like in Goethe) rather than a th sound.