Getting out thru the escape window is one thing but the distance down to the ground is another thing with a Class A.
I was parked next to an elderly couple with a Class A that when they pulled in and set up out came their ladder and it was placed under the escape window.
Talking with them they said at their age if they managed to get out the escape window during a fire only to die from the fall, they would be very ticked off!! So they place the ladder under the window just in case.:C
We all carry ladders so it wouldn't take but seconds to put it under the window. I know I've also seen the fire escape ladder for RV's that you mount above the window in case of a fire.