I've been shooting with a CL for just under a month, with some of the TL lenses (which are excellent, BTW) and some M lenses using the M to L adapter. You can see the results in occasional posts at the Leica User Forum and at GetDPI or in my albums on Flickr. To answer the questions in the past few posts, the M to L adapter supports any lens that works on the Ms. You can identify it automatically if it has a six bit code (or one painted on) or assign it a code to get the vignetting corrections. Or leave that off. With any manual lens, or with an AF lens in manual focus mode you get focus magnification and reasonably useful focus peaking.
The buttons and dials are more complex than the last two answers suggested. The left dial, if you give a short press to its button, lets you choose P A S M video or (gasp!) styles. The dials do different things in each of the four basic modes, with the right dial handling aperture and the left dial handling shutter. In manual mode, that's exactly what they control. In aperture priority, the right dial is aperture, and the left dial is exposure compensation. In Shutter priority mode, the left dial is shutter speed and the right dial gets exposure compensation. Makes sense to me, but some do find it confusing. The menus are much like those on the M10, with a favorites page that you can configure, followed by five pages of the usual stuff.
Anyway, for me it is a mini-M, with auto focus, lighter lenses, and almost equal image quality. And it also provides a 1.5X extender back end for Leica's long SL zoom and the R telephotos, without sacrificing aperture.
Flickr Albums:
https://www.flickr.com/photos/133969392@N05/albums