Can't confirm that it's on LTE 24/7 but it was definitely running some speedy LTE as I sat outside it last night at 2AM doing some speed tests.
That site is right across from a high school at the top of a hilly area. As you leave the area and head downhill, the signal degrades pretty quickly until it's gone at the bottom of the hill. The map of the area on Sensorly is pretty much the signal strength I was getting.