Personally, I love that a guy like Yeldon is our emergency back
He can step right in and be effective. There is no learning curve. This is huge for things like blitz pickup. Say we lose Moss or Singletary and have to put in Christian Wade. Defense does some fancy stunt, Wade reads it wrong and Josh gets slammed to the turf.
If you have a vet waiting in the wings, this is far less likely.