Should be no difference at all. I leave everything closed on mine, but that's just me. The only thing I can see possibly making any difference whatsoever would be direct sunlight on the windows. That being said, IF there was any kind of long term UV damage from sun hitting the windows, it'd be easier to replace a shade rather than something on the inside.
2012 Chevy Tahoe LTZ - HD tow package
2017 Rockwood 2703WS Emerald Edition