My personal opinion is:
Don’t worry about whether it’s 11.2mm or 10.7mm. That won’t be the main tell for such models. The retail price of this watch is over $100k when it was still available as a current model sold by AP. Anyone buying and wearing the watch should have the lifestyle and income capacity to make the watch look belieavable on the wrist. If you have the lifestyle to make the watch look legit on your wrist then you won’t have the problem buying the gen, thickness and other tells all solved.
If not, then the thickness difference between the rep and gen should be the least of your concerns, there are a host of other tells to give it away, the majority of them being different aspects of the wearer himself. If you’re looking to wear this as a novelty watch then tells won’t matter at all, the watch itself looks nice and respectable and the gen is rare enough as it is in real life.
So you see, compared with a regular ROO or Royal Oak, which are much more prevalent and belieavable in real life in terms of cost, the ability/willingness to afford/spend on and pull off such high end luxury models is the number one concern. Nobody will otherwise notice a thickness difference of 1mm or so for such obscure models, even AP collectors may not know how the gen geometry should be like.
So buy and enjoy the watch for what it is. It is a replica and meant to be enjoyed as a replica. Don’t worry too much some fractions of a millimeters.