Mind you, I'm comparing Clojure, the whole language, to Grails, which is just one framework. While it is true that most Groovy work involves Grails, there is also some Groovy work that does not, so the results of this comparison, if anything, understate the gap between Groovy and Clojure.
"It seems eclipsed these days in favor of Clojure and Scala."
Your view of reality is being warped by the Hacker News bubble. Consider the results of Google Trend:
http://www.google.com/trends/?q=grails,+clojure&ctab=0&#...
Mind you, I'm comparing Clojure, the whole language, to Grails, which is just one framework. While it is true that most Groovy work involves Grails, there is also some Groovy work that does not, so the results of this comparison, if anything, understate the gap between Groovy and Clojure.