It is a difficult call and normally I'd say no but I think that Milo and Maia kinda work. The only thing that I don't think would work was if there was another sibline: Milo, Maia and Ayden for example, doesn't really work.
Good point. I hadn't thought to test it with other names too. Milo is quickly working it's way up on my list. I love Maia, but there a lot of other names I love more for girls. It wouldn't break my heart to drop Maia. It's just something I've been thinking about.