No, they wouldn't, you wouldn't notice it either with the one on each of your wrist, this difference is so little that we need someone with a proper caliper or micrometer to clear that difference out.
Think about that, we are all waiting for measurement because to the naked eye, with gen and rep side by side, we aren't able to tell the difference !
I have a Mk V5 which is 9.012mm thick, I had the gen next to it, you can't see the difference unless you put them side by side, without a bracelet and look straight at their profile.
All this nitpicking about little details that are exaggerated on pictures (when they are not compared to CG pics) are just ruining your own experience of this rep and perhaps other people excitement. You should wait for someone to give his impression, some measurement, etc... or give it a shot yourself to see. Trust me, on my QC pic my markers @12 looked misaligned, even now, after knowing it, I still can't see it when I look closely