I put this down as a middle name I was considering for Miriam, and it seems like it's viewed as trendy.
I see Alix as a medieval name, with quite a lot of history and usage behind it. Queen Victoria's daughter was named Alix, though I wouldn't use the name in honor of her.
What are your opinions on it? I wouldn't use it as a first name, though I'd love to. But as a middle name, I think it's fine.
All opinions are welcome.