The only real difference is that the covering on the above camera is a smoother material than vulkanite. Vulkanite is slightly shinier, and has a big, pebbled grain.
The key decision I'm facing is how to have the top of the camera engraved. The standard for the model is this:
However, you can also have the camera engraved like this:
The latter resembles the way Leica has traditionally engraved their cameras, going at least as far back as the M3 in the 50's. However, it is also less minimalistic, and hence arguably less in keeping with the camera's overall design and function.
For further context:
Torn. Thoughts? Both camera/Leica junkie and non-junkie opinions desired.