Soooo, working time while driving should never be an issue. What is an inconvenience is that when you put away the car, the lights gradually lose their charge, so I intend to recharge them before going for a drive or tour.
Also, one needs to understand that these lights use RFID (radio frequency) to pair up, so if there are lots of metal between the controller and the lights then they may lose pairing. They were made for bicycles, not autos after all! If they do lose pairing, a simple button push solves it. For my cabriolet and my T touring this is not a problem since they both have soft tops, not a hard body cab.
Not a perfect solution, but it's sure worth a try for $65!