Hello!

I built myself a couple of VMs running Debian Buster, one with a "server" configuration (most of the stuff I use at work: VPN/SSH/FTP/DNS/Samba/NFS/Proxy/WWW/others) and one with a "client" configuration (Xorg, MATE as DE, Libreoffice, some web browsers, audio and video stuff...). Then I tried to upgrade to Beowulf, as in Stretch to Ascii

My results:
* Boot time after first installing sysvinit is VERY long, but it gets faster later on.
* I cannot install devuan-keyring through apt, must be done with dpkg
* On my "client" VM, apt-get autoremove uninstalled almost everything X-related: out went MATE, libreoffice, all web browsers... Had to reinstall it all, but it was just a minor hassle.
* It seems Buster doesn't have systemd-shim
* Both my "server" and "client" VMs booted and worked just fine (other than having to reinstall DE and stuff on "client").