I have only done the dry ice myself. But it was always my understanding that AEB-L simply did not need the cryo treatment, only the sub-zero.
It is unfortunate, in my mind, that so many people only want stainless. I gave in for a while and did a few stainless blades. I still have some AEB-L from those days laying around but the part I enjoy the most is the forging. At least when I was buying aeb-l, the thickest you could buy was 0.130" which is really just too thin to forge in my mind. Anyways, I've since changed my mind and no longer do stainless. But this is just a hobby for me!