i just checked .. its integrated really well, everythings working. First enable xtube using .config/cuteTube-QML/cuteTube-QML.conf file. Second enable xtube in drop down menu and third use it as u would cutetube .. search + download (in your scenario). Once it downloads, in settings change the archive folder to xtube/ .. OR u can always edit .conf file and xtube download folder can also be the same as cutetube then eerythings on the same archive (downloaded stuff).

now hoping that covers your issue .. now lets see how battery is hit in this version