I don't even really see the connection between Rapha and Rivendell. I guess Rapha does have their "Brevet" category of clothing that makes reference to randonneuring, but that's really the only tie I see between Rapha and Rivendell. And Rivendell doesn't even make a proper randonneuring bike, since Grant Peterson has a different philosophy on fork trail.

Most of the new Rapha stuff is very modern and bike industry friendly. Heck, they support and outfit the pro EF team.