Originally Posted by
pdlamb
+1 more. Carbon bikes are fine for the "play bike" role, but you wouldn't want to clamp a rack onto a lightweight carbon frame.
Yes, there are workarounds like seatpost collars with rack bosses and support leg extensions that let you use the hub/QR to support it, but if you're able to, having both a utilitarian weekday bike and a sunny weekend bike is the way to go. N+1 and whatnot.