Thanks for the review.
When I saw the photo, my initial though was: "He should have wiped the dust off the glass,"
Then, I realised it was not dust on the glass but the cosmic highlights on aventurine dial.
I like the Rieussec chronograph layout that works well for that model but adding a tourbillon is distracting.
The good news is that the tourbillon does not affect the reading of the chronograph counters.
Overall, with that Montblanc Star diamond and the cosmic dust, I think this is a "fun piece" to be brought out for special occasions rather than a daily wearer.