No long term testing yet. I passed on the black Jeep detail I planned for these FLEX tools after inspection since I only had a Sunday to dedicate to the detail and it was in very rough shape. Black paint, trashed interior that smelled like fish and he wanted a complete coating detail. It would have made for a great before and after, but the timing wasn't right.
FLEX will be down here for Mobile Tech Expo in Orlando so I can get more answers on accessories and when exactly these will be available.
But trust me, I am ITCHING to run these on an entire car.