I've had a server running for several years on Arch. The systemd transition wasn't bad. I didn't have any custom init scripts to migrate, so it was mostly update & reboot. Arch is a great install once and update forever system. I even migrated my install in-place from x86 to amd64 after upgrading the CPU. There's a wiki article for it! https://wiki.archlinux.org/index.php/Migrating_between_archi...