This is not a happy Derailleur Hanger. But it gave it's life to save my frame and derailleur.
No more nobler end for a Hanger!
Here is the EDH after the install.
Problem Solvers makes one that looks a little bit easier to install and addresses the rotation problem.
Either one is then next best thing to carrying the specific hanger for your bike, maybe better if your buddy breaks his and does not have a spare for his bike. There are so many different hangers for different bikes, an EDH makes sense.