I don't have any automatic chronograph watches with a power reserve today, but when I did own one, most of the time the indicator showed the watch was fully charged.
The related question is, "How efficient is the peripheral winder to the task of winding up the watch from 50% power when you strap it on in the morning?" If it is a watch that is going to be fully wound after 5 minutes of puttering around in the morning, might be a bit harsh to dismiss it as a complication available only 25% of the time. If you're using the split seconds chronograph to time his and hers Aeropress coffees first thing every morning this could be a legitimate problem.
It is a very fine and delicate ultra-thin automatic split seconds chronograph movement, classically executed...with a peripheral rotor to make use of the extra peripheral real estate inside modern cases. Vacheron could have placed this in an 8.5 mm thick case like the Harmony model, but they've decided to release it inside a classically proportioned case this time. I would trust Bulgari to break the Harmony's record eventually in the Octo Finissimo line, but the tradeoff will be aesthetics for robustness on the movement side.