Some worry about their reps looking genuine so they can "pull it off."
Personally, I don't care if it says IWC or Parnis on the face.
My first rep was when I wrote a Parnis dealer and asked if they had a "sterile" one.
He said "no, but I have one with IWC on the face."
If a brand or price made me happy, then I'd feel pretty shallow.
I fall for watches based on design.
If I'm wearing a rep and someone asks, I say it's a rep.