Any recent or additional thoughts on the topic of how close the ppf is to your gen in both look and feel? Could you tell the difference when handling with your eyes shut? Could your mates tell? I really doubt ANYONE could tell on wrist, including those who own or are around gens.
Can't answer the first part as I do not have any 5711s. As for whether a decent rep would be called out by people around you, IMO i feel it depends on your personal "branding".
If you're known to be one who wears expensive watches (like Chaos and his gen 5711), I don't think your mates would tell unless they are on this forum or know what to look out for.
Point is, regardless of whether they have gens or been around gens, people who do not spend time looking at /researching reps wouldn't know what to look out for unless side by side.
So if you're buying a rep cause you like the gen's features but its just impossible to get from ADs, then just get the rep and be happy with it - since its around 80% close to the gen.
But if you wanna show your mates that you have these hyped pieces, then get a couple of cheaper gens (rollies/APs) first before wearing a decent rep on the wrist