What could I do with a Masters in Linguistics?

I'll be graduating with my BA in Linguistics from McGill soon, and after I'm going to teach ESL abroad for a few years to travel, raise money for grad school, and see if I like teaching or not. I could go into something with a more defined career path, such as Library Science or Speech Pathology. But I'm very tempted to go for my Masters in Linguistics, as it still holds the most interest for me. What would my career options be? Would I be better off as a Librarian or Speech Pathologist?