For your info: I just went to B&H and tested a few Voigtlander finders - the 35, 35/28 and the 40. I found that the 35mm brightline:
Voigtlander | Viewfinder for 35mm Lens | 45DA428B | B&H Photo
was a pretty close match for the camera - much better than the built-in optical finder, especially at the top. You have to allow for a little at the bottom, and the image more accurately is described by the outside, not the inside of the lines, but it's a pretty nice accessory.
I've also found that by hanging the camera around my neck, and pressing the shutter halfway down as I bring it up to my eye, the focus is accurate enough so that I can compose, then fully depress the shutter. Most of the 'shutter lag' on the g9 is actually focus lag. If you pre-focus by half-pressing the shutter release button, the actual lag is almost non-existant.
Thus, my quest for a cheapo Leica M8 is complete.
PS, I didn't have time to buy one as I was rushing for a train, but the lowepro did look like a nice bag.