Yes, Laura I have. The a/c extracts the humidity/moisture out of the conditioned air. On very dry days, such as we have in West Texas, what little condensation may have came out of the a/c unit pretty much evaporated on the roof. The very next month, while having an unusually humid weekend, it was like Niagra Falls on the back of my 5er. It all depends on the amount of humidity in the air. More than likely, since you said there was very little humidity, that was why you had no condensation.
2016 Chevy LTZ - Duramax/Allison
2008 Eagle 30.5BHS