Actually, there's completion, and excellent debugging tools for Clojure in Emacs, both step-by-step kind, and investigative. "I don't want to use Emacs" is a completely valid stance (de gustibus...), but it should not be misinformed.
I know that Emacs has good support for Lisps in general, my comment was a joke towards what i consider basic features of an IDE (the whole 'modern' and 'advanced' thing when referring to stuff that were available in the late 80s should have made it obvious :-P). It comes mainly from my observation of the trend where a lot of developers like to jury rig "IDEs" out of text editors and a bunch of other unrelated tools that look as if they are made to be run in 70s terminals that look and feel considerably worse that MS-DOS applications which had 1/100000th of the available resources.
