Never tried it or know anyone who’s done it but my foreign language speaking/listening skills are shocking so I’m not the best person to ask.
I reckon it’s probably worth a try, the best way to learn a language is the way that’s most enjoyable for you. Like, I’m a massive grammar nerd so the way you learn languages at school was great for me and the cheapest way to do it, but it’s really boring for most people. A lot of people I know couldn’t grasp a language until they went and stayed in a different country for a few months, but it’s not always an option so regular Skype lessons with a native speaker is probably a good second.
I think @_Em is probably best placed to answer on this.