I don't think it's necessary to have a formal education in any subject, it's more of a shortcut in the best case. An open curiosity and some logic for mitigating the biases from our reasoning is probably sufficient.
Superficially that is the appeal of Harris, he is articulate and strong on logic but it will only carry an idea so far. His stance on atheism is a good example of limitations of a purely rational approach to living in the world. I agree with his point that we probably would be better off without religion but we still need some of the spiritual elements. I suppose he would argue that he obtains this from an introspective practice which make his blind spots all the more surprising, given his obvious expertise in the area of self awareness e.g. Waking Up app and book. There's some interesting insight on this point by the producers of Decoding the Gurus podcast where they recently mused the rise of fascism. One other podcast on the fringe of philosophy that I've found entertaining and informative is The Very Bad Wizards, it's run by scholars for fun but I first became aware of many of the basic philosophical tenets there.
Thanks for the links, appreciate it.
Personally I would do this but it depends how well you get along with them. Obviously the last thing you want is arguments and sulking. Having your own space to retreat to would be the thing to negotiate ahead of time.