Welcome to the forum! I think that the biggest problem with deploying a popup in cold weather is that the "canvas" material would be more susceptable to damage due to the brittleness at very low temperatures. There may be some stiffness in the lift system from the grease being so cold also. If it were me, I'd just take it easy and slow.
You're gonna love the 23B!!!!
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.