I'm a happy new owner of a G11. I'm very much enjoying this little camera and it is such a treat to take it and go verses bringing along one of my full size cameras. I've heard of the G series cameras refereed to as "poor mans" Leica's and I'm beginning to see how this name may have been given: quiet, small, light-weight, full manual, rugged.
Using the bata version of the DNG converter (v5.6) I'm able to use my DNG converted RAW files in Aperture. Quite simple and with surprisingly good results.
I'm a little bummed that Aperture doesn't support the g11 yet but the DNG process was created in Aperture to accommodate those of us that use cameras not yet supported.
A little caveat about the speed with which Adobe updates its RAW support: I learned the hard way, twice (which very well may make me the village idiot), that when Adobe updates its RAW support for a camera, it has global consequences. A number of years ago when I was still doing my RAW edits in Bridge, I had worked a number of shoots and was happy with my results. An update for Camera RAW surfaced which I eagerly made only to find that all the edits I made on my previous shoots had shifted slightly - but enough that I could notice it. This happened without warning at all and yes, it happened twice! At a Photoshop World conference I learned that this was normal and, in Adobe's view desirable as "the latest RAW algorithms are going to give the best results."
While it may be true that the latest RAW algorithms are going to be the best for processing current RAW files, it is a total drag with the effect it has on all the files you have worked in the past.
Aperture doesn't do this! All your previous edits in Aperture are preserved in the algorithm established at the time of its release and wont ever change unless you "Migrate" your images. This is such an important feature of Aperture that I suspect a large handful of people don't know.
Finally, I wonder it is for this reason that it takes the time it does to get an RAW update from Apple. Who knows?
Just my .02