For those of you out there who own the FOIS how does it wear compared to the Pro? I know that one is 39mm while the other is 42, however do you notice any size difference to the eye? Meaning does the Pro wear big compared to the FOIS.
I just sold mine and will ship it tomorrow. To my eye it looks slightly smaller, but the difference isn't significant. It's a beautiful watch and understated. If you like the straight lug case more than the twisted, it's a great opportunity without paying for a 105.003.
I personally prefer the straight lug case but they don't feel all that different to me, the dial and bezel are exactly the same size on both.
I own CK2998, which shares the same case with FOIS. I do feel that CK2998 is substantially more manageable on my smallish (6.5inch) wrist than the Pro.
It's a matter of opinion really. The reason that the size difference is measured is because the pro added the asymmetrical case with crown guards. Beyond that, the dial and bezel is the same diameter. See the gif below for an A-B
Not really answering the question as for size, but I think the bigger issue in how they wear is sapphire vs. Hesalite