Originally Posted by Zaskar

as mstateglfr said, chan slap really isn't a thing on the road (my gravel and mtn bikes are a different story). The only reason to protect that area on a road bike is lube/dirt/grime from the chain. And, that's really only an issue for matte paint. And really, it just requires some degreaser. So yeah, no protection for that Ti frame is my vote.

Cue the "... and that only happens if your chain has too much lube, etc." in 3... 2...