I've never heard of it at all over here, but then, English university certainly works differently to American. Here we wouldn't even dream of taking modules directly related to our choice of degree program, haha.
Yeah, you'll make the right choice in the end, I'm sure. It'd be a fun thing to study definitely but if you're not sure that it'll be able to take you places then maybe it's worth trying out something else you enjoy. Don;t end up doing something you hate, though. d: