We have a considerable bank in front of our house. It can be mowed with a conventional rider but it ends up damaging to ground from sliding so I use a walk mower. A couple years ago I purchase a 4wd personal pace Toro that has made it Much easier. It never slips or tears the ground and the speed is easily controlled simply by how far you push the control bar. Even has power reverse. It took getting used to but it also as an automatic choke and no speed control; just grab the safety bar and pull the rope. Starts on the 1st/2nd pull every time.
Great mower. But I surely would not want to mow our 3 acre yard with it. Although that would be great exercise for my legs/knees.