We were closing the shades while traveling, but have started to leave them open. No particular reason, just didn't bother closing them. In theory I suppose it would keep the interior cooler to travel with them closed, but we really haven't noticed a difference.
Last winter we stored with them open, but again, no particular reason.
Rob & Kelly, Bella & Brady (Miniature Schnauzers)
2016 Eagle 323LKTS
2016 Ram 2500 6.7L CTD
2015 White Hawk 29REKS Summit Edition (Traded)