Actually, you probably could. If you write the hibernate image to a place using a machine-id of some sort. Imagine you have images like

    /hibernate/machine/5c76f5e0-9117-4e33-8093-9de2e2f1b6de
    /hibernate/machine/d755fe2c-2b13-4436-8a5b-ba3363b9c642

When your kernel boots up, it grabs its machine-id and looks for a hibernation image to map into its memory. If it finds one, great, you have an "instant wake". If it doesn't, you boot as normal. Now imagine that your kernel tries to mount a specific device to `/hibernate` prior to looking for hibernate images. Upon hibernating, it writes its image to its machine-id. You could easily share the disk between two machines (even of different architectures) and keep two separate hiberante images on disk. You wouldn't be sharing the processes, but you could share your data.

With a sophisticated enough setup, you could probably even dual-install binaries (although this would be much involved with ELF where you must have separate binaries compared to something like Mach-O) to something like /usr/bin_x86_64/ and /usr/bin_arm64/ and then use your shell to select your path. This might work on a system level, but would certainly work on a per-install basis manually.