My dad has the Panasonic LX-2. Exact same camera. Sensor shape is 16:9, so you only get the widest 28mm focal length when shooting at that aspect ratio. Really nice camera. My dad has met a few people with the D-Lux 3 and had them side by side, and said they are the same camera.
For what it's worth; I also recently purchased a Panasonic compact camera to go alongside my current DSLR. I have the FX100, and since I've had it I have been blown away by the quality of pictures and the ruggedness of the construction.
Panasonic LX2 for the win, it's so cheap now too.