At least in these photos they appear truncated - or less onionated - than those on a Maurice Lacroix a Chronoswiss. The old ML Flyback, that I once owned also gave no tactile pleasure while trying to grip the crown for a full wind.
I don't know of any high-end brands that use them because I immediately look away.
So much for our shared aversion.
Of course, boths these Haldimanns are works of art. Only a churl such as myself would wonder about their time-keeping properties, the raison d'etre of a tourbillon - wherever it is placed.
amerix