@hj
Ha-ha, yes it is! All EFI-capable machines I have are Macs and they have a handy boot selector that looks for .EFI-files on all attached media and which you can fire up holding Option/Alt at boot.
It breaks the linux's suspend/resume from disk though: you have to use the exact same entry system was originally booted for resume to succeed — that's a bit annoying too, I've lost the saved state a couple of times this way 😩
@quad @eal