Never had a problem as all of my other repairs have been perfect and invisible. There was only one instance where my oak Daria came back and it had a biro mark in the underside of the plaited handle, I wasn't completely sure if it was there before or not, so let it go, however I didn't remember seeing it previously
Initially I didn't spot the cuts/holes as they are not quite aligned to the back of the lock plate, they are slightly lower and all I concentrated on was the view from the front, where the leather is.
It's going back to M for assessment, however the DPD man failed to turn up to collect it last week, so hopefully they will turn up tomorrow