We had the exterior, removable screens on our DP. We put them on when it was in storage ( middle of a dirt lot in Az sun )
We also used them a couple times while camping.
They worked ok, but not as good as the silver stuff for heat. I think when the sun is really blazing, the best thing to do is remove all sun, but then, like Im sure you are concerned with, your view is gone.
Not sure where to get them, since they came with our old coach, but if you are handy you could make them from the material at Home Depot. Pretty sure its the same material. Or, better yet, have a local seamstress make it for you.
Best of luck. Hope all is well. Travel safe.