V or 5

When I read it, I say "V" in my mind, but when I say it out loud, or I'm talking to people about it, I say "5". I know it's "5", but it's just a habit...

This is just like Sephiroth in Final Fantasy VII...

The first time I saw his name, I pronounced it "Sep-her-auth", but then I learned his name was pronounced "Sef-ear-oath", so when I talk to people about it, I pronounce it the right way, but when I read it and think about it, I say it the way I used to out of habit...