It's okay. It seems a little bland to me, and I don't like how it sounds like the word "shame," but that doesn't bother me too much.
I do feel like a lot more people will know how to pronounce it due to
Harry Potter. I had never heard of it before, so when reading the books my family and I pronounced it "SEE-mus" until the movies came out :)
we all share the same sky - the maine