I tried to attach a file with the installation instructions for the carrier but it didn't work. Below is the url for the carrier. If you scroll down, you will see a download for the instructions. That may answer your question because you can see it mounted on the bike. https://www.ktm.com/en/naked/790-duke/accessories-luggage
I have also seen pictures on the forum of bikes with it mounted. I just can't send a link at the moment.
From what I've seen of the tail tidies, I think you have a reasonable concern.