For the first year we owned our Solera 24R, we did not tow. It worked OK, but there were times when it was a pain in the rear to unhook the power, water and sewer so we could go somewhere, only to have to reconnect everything when we returned.
Back in May, we bought a 2014 Honda CRV and had it and the 24R fitted with a complete tow system, including brake activation on the CRV. We have now made three fairly long trips (actually 2/3 through the third trip right now) and find that towing the CRV is a breeze.
We've had no power issues in pulling hills, etc. Rarely do we drop below 50 mph. Fuel mileage has ranged from 12.8 mpg to 14.2 mpg, depending on the terrain. Our most recent leg of the California-Oregon-Washington trip we are on right now, we averaged 14.18 mpg over a 300-mile span. Overall, we are almost exactly 13 mpg.
There are days when we don't unhook the toad, but it sure is handy to be able to do so when you want,