Sorry I can't answer your question directly, dragger, but I'm hopeful that someone with a lot more experience and history with multiple generations of CSV's will be able to answer this for all of us. I too, am very interested in the longer-term health charactersitics of the CSV.
I can confirm, as I have an adult female GSD (mutt) and an adult female CSV, that I was amazed at the differences in their chest shapes. My GSD has such a broad, barrel-shaped chest whereas my CSV has a much narrower tighter chest that is somewhat "pointed" at the under crest, lacking the large bellowing side expanses of my GSD's chest. I thought I remembered reading somewhere that this helped them run through the snow or something (not much snow down here in Louisiana).
Not to hijak your thread, but in addition to the bloat issue, I would also like to know a somewhat related health question - what is the typical/average life-span of a healthy CSV? Are there any differences in male/female life spans due to their genetically-based size difference?
Thanks in advance!