Short answer – absolutely no problems towing with our Edge. The vehicle/trailer combination has been perfect for needs. Here in Michigan there are no mountains to speak of though there are some steep grades here and there. Downshifting in sport mode pretty much allows me to keep the speed at a 60 mph target on the expressways.
I have to qualify that answer by saying because of our backpacking experience we travel pretty light and minimal. We don’t carry any unnecessary overweight equipment and never travel with more than 5 gallons of drinking water. Also we have done some mods to reduce the overall weight.
Now, would we tow the pod with the Edge cross country or to Alaska? Probably not. For peace of mind I’d think seriously about upgrading to a larger vehicle.