Longterm effects of unit closed

Going back and forth between a canvas popup and the TM. What is the long term effect of being closed up either outside or in a garage between a TM and a regular canvas popup like a Fleetwood? We are also planning a cross country trip from Florida to Vancouver Island this summer. It would entail quite a bit of one nighters and of course running into bad weather. I wonder which type of unit would work better for ease of quick setup and breakdown the next morning. Also being situated in the rain at no fault of our own!