Thanks! Wasn't sure if any of these solutions were easily achieved on all of these ARM devices. Would love to hear any experience on performance, although when you are on a Pi Zero, that doesn't seem too important. At least I can move my PiHole from docker to a fun little device that can display stats on an OLED screen!
The original Pi and Zero can only hit about 3MB/s with LUKS. The newer models can do around 10. Might be usable if you only encrypt your home folder.