Yes, the owner's watch is going to be highly customizable. It's going to be a long-lead order item. It can be customized to the options on the car, and there will be a configurator online available to play with soon. I'm unaware of anyone else having done something like this.
You can customize the bezel, dial, hands, and more. They will go as far as matching your extended color palette selection with the same exact paint that is on your car. As you can imagine, this all makes the owner's edition substantially more expensive than the Endurance Chronographs. I don't think there is any branding other than GT on the owner's edition, and it can only be ordered by the original owner of the car.