They only thing i don’t like about doing it OS X is that you can’t mount the EFI directly and Chattr protect the file. This means that if anything in the OS wants to touch and modify the EFI file it can. This not uncommon on an update. In an unmodified system it is not a big problem because OS X will create a clean unmodified(damaged in it’s mind) on boot, but this is exactly the opposite of what we want.
I appreciate the link and instructions. Just be careful about OS X one day decided it doesn’t like what you did and setting it back to default.
– Adam