When it comes to luthiers, the cure for a bad luthier is a good luthier. Which is what Gibson will have when they get a guitar in for repairs. There is really nothing a good luthier can't do and sometimes even better than the original state it was in. Countless stories of high-end guitars getting busted and going to a good luthier and coming out in even better condition than they did leaving the shop and sounding even better for it because you get so much additional expertize. Horn splits happen and are something that can be solved to even become stronger than before. Of course, it all matters on finding the right luthier. It took me three attempts to find one who does super work at a good price. The middle guy was terrible and the first guy I had was capable, but this third guy is a wizard.