Me, never. I started on cello, after all...Do you do sideways "guitar-like"string bends?
But recall this:
That's somewhere between 10 and 15 years' wear at the hands of a working pro.It came to me like this 3 years ago
I've seen his videos and he has fine technique.
I think that's just many years of gigging with rounds.
I can't rule out that there might have been some bends in its past - I just don't know.
But if that's all it's got to show for 15 years of bends, most weekenders will never have anything to worry about.