I bought my Mavic Pro FMC last August, picked up a Spark before Christmas, and while walking through my local WalMart this afternoon I grabbed a Tello and a Steel Series Nimbus BT controller to use with my iPad mini 4. Charging everything now and hoping for a great maiden flight.
The maiden flight went perfectly. The Nimbus BT'ed with the Mini4, and that connected to the Tello without error. Before I could fly I was instructed to perform an IMU calibration, so by the time I disconnected the guards and props, did the 6-way calibration, and reinstalled everything I only had time for a 6 minute flight. I did a few minutes indoors and completed with a short outdoor tour around the backyard. The Tello isn't happy in very much wind, but it held station surprisingly well outside, and was effortless indoors. I and my family will enjoy this device for some time to come.