Re incus: I don’t know for sure yet. I have an old LXD setup at work that I’d like to migrate to something else, but I figured that since both libvirt and proxmox support management of LXC containers, I might as well consolidate and use one of these instead.
Maybe you should consider consolidating into Incus. You’re already running on LXC containers why keep using and dragging all the Proxmox bloat and potential issues when you can use LXD/Incus made by the same people who made LXC that is WAY faster, stable, more integrated and free?