I disagree; you are not tied to Swing or any Java UI toolkit merely by using Clojure on the JVM. You can just as easily integrate with a GTK, Cocoa, and whateve

I disagree; you are not tied to Swing or any Java UI toolkit merely by using Clojure on the JVM. You can just as easily integrate with a GTK, Cocoa, and whatever Windows uses. You'll notice how the current Emacs is weird on all three platforms by default (at least they switched the scrollbar position). C/Guile isn't a panacea for a UI frontend, they're entirely orthogonal.