I created shortcuts in Keyboard → Shortcuts:
/bin/bash -c "sleep 0.2 && xdotool key ctrl+c && sleep 0.2 && xdotool key ctrl+shift+c" for copy and write to interVM-clipboard
/bin/bash -c "sleep 0.2 && xdotool key ctrl+shift+v && sleep 0.2 && xdtool key ctrl+v" for read, wipe and paste
And it’s working sometimes! Not smoothly (to the point of “unusable”, 50% times it’s just does not work and idk why) and some apps are ignoring these methods, but still.
Probably I could achieve same goal more smoothly with xte\xkb\ahk\xbindkeys\etc but I’m afraid of installing anything in dom0.