Dear Nicolas, thank you for your well-balanced and highly informative description, and of course your marvelous pictures!
It is no doubt that the V4 is a very attractive and well-finished watch, but that was never disputed. In the center of the various debates, though, we found concerns about its reliability, efficience, and useability. The concept of using teethed belts has yet to prove that it can achieve a similar performance as teethed wheels and pins. However, at this price tag, I assume that 99.9% of all V4s actually sold will disappear in safe storage, and will never - or barely - be in use.
Remember the issue of the original "Freak", where the problems appeared only many years after the watches were produced, because most of them were safe queens.
Regards,
Marcus