Autocomplete and debugging with clojure works. The problem is most clojure developers don't use common java IDEs. So it appears like it doesn't work or exist. But recently there has been an explosion of plugins to help everyone that isn't familiar with emacs & slime.

Autocomplete:

http://stackoverflow.com/questions/4289480/how-to-do-automat...

Debugging:

http://clojure.org/getting_started

Plugins:

https://github.com/swannodette/textmate-clojure

http://code.google.com/p/counterclockwise/

http://plugins.intellij.net/plugin/?id=4050

Options:

[emacs is too hard on windows] http://clojure.bighugh.com/

[but I use a mac] http://aquamacs.org/

[but I write ###.NET] https://github.com/richhickey/clojure-clr https://github.com/jmis/vsClojure