When I got my XZ1, I didn’t use my unofficial build. Instead I used A GSI built by @harvey186. See this thread for details of what I did.
His latest images are at https://ecloud.global/s/t7cXPa8PdMCp89J, and the one to use for the XZ1 Compact is
I think that image is unencrypted, so it should be possible to backup your apps and data (using TWRP) if a later build becomes available
The one I used worked pretty well except for making and receiving calls, where I ran into problems. In the end, I think those problems are caused by defective hardware (the problems also occur using a Stock firmware, and a Lineage ROM). When a replacement arrives, I’m not sure whether to go with the GSI, or with a device-specific unofficial build (mostly because the GSI is 2 months old, and I would prefer a more recent version of /e/)
More background to my experiences in this thread