We have just received notice from Rayqual that the Leica M-M4/3 adapter for Leica M lenses will be available on the 26th of January. Once we are able to ship you should have it within a matter of days afterwards. (Possibly even for the rest of Chinese new year holidays! EMS shipping within major Asian locations takes about one day, however bear in mind postal delays caused by the holidays so we cannot guarantee a timed delivery.)
In the meantime you might be interested in looking at some pictures of lenses mounted on the G1 using the Rayqual device and sample images taken with them. The article is in Japanese but there are plenty of images and machine translation does a decent job.
The lenses used are (from top to bottom); Minolta M-Rokkor 28/2.8, Summicron-M 35/2.0 (4th generation non-aspherical), SMC Pentax-L 43/1.9 Special, Canon 50/0.95 and Nikkor S.C. 50/1.4.