I've owned both, sold the CL and kept the Hexar, then bought a new one when it broke.
They are both great cameras, but the CL is not that much smaller than a M2/3/4 etc., nor that much quicker to use, yet it has a dimmer and harder to use RF patch. I found that in practice, if I wanted to use a manual camera it was not really much more effort to take a M body or Nikon F with a pancake lens with me.
The Hexar AF, on the other hand, is almost exactly the same size as a M plus 35mm lens, but offers the advantage of super fast focussing in the dimmest of light, almost total silence, ae, and enough manual control when it is needed.
I think they are both great cameras but the Hexar AF fills a gap in my camera collection wheras the CL, for me at least, largely duplicated a M body.
The Hexar AF is considerably better than any of the good 35mm compacts (GR1V etc.) I've owned, in all ways apart from size. It's no pocket camera, but apart from that near perfect as a quality point and shot, or low light camera.
Some pics from the Hexar AF:
http://www.flickr.com/search/?s=int&z=t&w=22377923@N00&q=camhexaraf&m=tags