Yes, the roof rack works great and the silt was "kind of slick" - actually, it is a very scary one... (you can see in the background of the video, how many times my daughter falls and so is my wife )

The black cylinder on the roof is a 21L water tank (~5 gallons?) .
During the day, in that time of the year, it was ~30-35C at night it drops down to 12-15c