another good news @Spikerguy ,
i can now report about installing,configuring and running manjaro 20.08 KDE variant on my vim1 as well;
I managed to configure it from a console session after 1st boot (just login as root w/o passwd, then follow the instructions),
and I also managed to make it use my BT mouse and BT keyboard and not a single USB hid device ever.
here is a kudos image of KDE in action on vim1 (from where I also post this)…
regarding wifi, same issue out of the box as the XFCE variant : wlan0 is absent and we cannot get any ssid list on the GUI…
[raxy@vim1jarokde ~]$ iw dev wlan0 scan
command failed: No such device (-19)