Yes, we carry a folding ladder that when straight, is 16 feet long and a 6 foot collapsable step ladder.
I've used both of them many times, but then I try and fix anything that goes wrong so I'm up on the roof from time to time.
Although we are only half-timing now, we tend to take trips that last months instead of short trips. This means we are often at a distance from the one shop that I trust (where they know what they are doing, and allow me to stick my nose into every activity), so if something is up that needs a ladder, I want to have one.
BTW, both ladders are folding aluminum, so they don'e take up much space or add much weight.