I thought it would be good to have a topic specific to portable panels and getting them connected to our Olivers.
Oliver offers as an option a Zamp-specific port that is installed next to the 30 amp port on the street side of the trailer. This is the route that we decided to take, but we've run across a few limitations that potential buyers should note.
First, Zamp tells me that the port itself is limited to 200 watts. That should be fine for most people but if you do want more solar than that, the solution is to ask Oliver to install an additional port. And you might want to have a second port installed anyway, because...
Secondly, Zamp doesn't provide any way to daisy chain their portable kits. If you want to use more than one set of panels, you must have a separate port on the trailer for each one. Even if you don't want more than 200 watts of portable solar, you might consider getting the extra port anyway, since the larger panels, particularly their 200 watt panels, can get pretty heavy and difficult to store. So two sets of 120 watt panels may be a better route to take than one set of 200's.
Just something to consider when doing your planning. I can tell you that the Zamp panels are solidly built, with stiff frames and legs, and come with a very sturdy semi-rigid case. They come with an attached charge controller that looks like it has very similar options and interface as the controller for the rooftop solar, just sized for the wattage of the panels. They come with a 15' cord (you can get a 15' extension) and come with an adapter for clamping directly to a battery.