Ok, thanks for the tip. They are officially supported it looks like, but there seems to be some bugginess in that support. Seems like the Meteor Lake processors (and therefore Arrow Lake as well) all have the same issues.
I might have a shot at trying to build the kernel and replacing it in the image with one that has EFI handover enabled. I suspect if I can get past the initial boot process I might be able to get it to work. I’ll post back if I am able to make some progress.