If interested, just posted my review of the D-Lux 4 on my site. Hopefully it is useful info for anyone thinking of this camera. Thanks for looking!
http://www.stevehuffphotos.com/Steve_Huff_Photos/LEICA_D-LUX_4_REVIEW_AND_SAMPLES.html
http://www.stevehuffphotos.com/Steve_Huff_Photos/LEICA_D-LUX_4_REVIEW_AND_SAMPLES.html