A Contax G2 is a rangefinder, not a P&S.
A Contax G2 is an autofocus camera. "But the AF mechanism in the G-series does indeed use a twin-window system much like that of the older mechanical rangefinders — only in electronic form." http://en.wikipedia.org/wiki/Contax_G I talked to a Contax rep at a large Photo-Show when the camera was new. He said that with manual focus you were just controlling the electronic autofocus manually, i.e. not at all like focusing a Leica. He thought it was a Big Step Forward.
Here are two videos of Juergen Teller shooting ads for Marc Jakobs, notice how he treats the G2 like a P&S, no focusing, he just pushes the shutter.
Daisy by Marc Jakobs Daisy by Marc Jacobs film 2
Marc Jacobs Perfume Oh, Lola Dakota Fanning - Behind the Scenes - Marc Jacobs Perfume Oh, Lola - Full Video