Thanks everyone for your input. It does seem like a ladder will be a good addition. We are not sure what we will use it for as we are new to rving, but will be picking up a 45 foot HR Navigator in a few weeks. My biggest concern is having something that needs attention high up and not be able to get to it, such as an awning.
I copied two of the same links in my original post by mistake. The second ladder that seemed like a good product was the combo, a-frame and extension ladder. Seems like the best of both worlds.
See it here:
http://www.campingworld.com/shopping/item/telescoping-6-extension-ladder/69517
Stuart