I have repaired a few and have a few that were repaired. One with a bad crack behind the lock was epoxied and is holding up fine. You can see the joint, but it is fine and holing up well.
In repairing a crack, if the wood is free from oil, and it can be done to be so, with todays glues, the joint is stronger than the original wood. I have taken hardwood and glued them together making the board wider, purposely broke them and they did not break on the glue line.
This is a lot different from repairs made long ago using hide glues.
