Always played in English and never had any problems - also reading more english just made my understanding of the langiage a little better if i have to be honest.
Then they decided to do Italian servers; tbh while the translation work is really good, i'm too much used to English names for basically everything. I also hate how they tried to render things like city names, main character names, etc in italian and they just sound awful.
Always played English, and if i'll countinued for WoD, it will stay like that.