When it comes down to words/dialogue in TV shows I think the correct pronunciation is often forgotten and becomes dependant on the actors who first say the words.
I remember many years back there was a massive who-haa in Buffy about the name "Angelus".
Different actors pronounced it differently in the first season from episode to episode and it wasn't until the end of season one or early in season two they seemed to get all the actors on the same pronunciation.
The actors themselves admitted in interviews they had no idea how to pronounce it when they read the script and no one gave them direction on HOW to pronounce it initially so they all went with their own interpretations.
I would pronounce caminus KAH-mi-nus personally but I haven't heard how bad the CW version is as I've been holding off watching as the voices really grate on me. Given it seems like they've cut corners in places I doubt correct pronounciation is high on their agenda.
