A rare few people are using Elm server-side in production already with lukewestby's worker stuff. Check the Elm subreddit. Elm's JS interop is much more interesting than your understanding of it: it's a pub-sub system which allows you to embed small Elm components in otherwise "normal" web pages very easily. More info here:

http://tech.noredink.com/post/126978281075/walkthrough-intro...

I'm sorry to be so negative but I really hope your comment doesn't remain the top comment as it's not very well-informed at all.