I didn't try it since there is no public release yet, I only read the documentation.
My feelings are mixed regarding Ceylon and even JetBrain's Kotlin. The concept is nice and there are many cool features but if you can't use any of these languages, then what?
I really wish if Oracle create a better
Java that contains ideas and concepts from Scala, Ceylon and even Clojure. To much to ask from Java 10 / Java X?