Good question.
We will travel to Alaska from FL late May of 2020,return thru Alberta in early Sept 2020.
We recently began to search for a tire hitch that sits higher as to not hit/scrape pavement,to also secure an aluminum ladder on.
While looking at various options for our needs, I have not seen what you describe.With that said, I have not looked for that specific item.
We plan to bring the appropriate size can of "Fix a flat"for the RV tire we have with hopes if a flat occurs, we can slowly make our way to a service station with appropriate equipment. We will not attempt to change a tire on an 11,000lb+ vehicle.
Wish you luck finding what you need.