Originally Posted by
velociraptor
Logically to me it seems like a clamp-on derailleur would be inherently more stable since the clamp is integrated into the mech.
Makes zero difference, as the clamp on adapter becomes the clamp.
Clamp-on deraileurs are a bit of a legacy item, no need for them on any modern bike, all they do is limit the ability to be swapped with another frame in the future, given the choice, would fit a band on with adapter every time.