The main disadvantage of OF is the power outlet requires a special adapter and will not actually charge a laptop, it just won't lose power when plugged in. If you plan to do a lot of work on your flight and need to charge a device, I would choose 62 A/K or 64 A/K.
They are planning to have all cabins be open, so they are effectively turning mid-J with OF into an almost high-J with no F.