Mobility
Because you don’t have to carry rolls of film, it is much easier to take pictures with digital infrared cameras.
You also don’t have to worry about things like heat affecting your film, meaning that you can take pictures of things that you would previously have been unable to with film infrared photography.
Furthermore, there is no need to carry around a bulky, heavy tripod or external infrared filters (if your camera is converted), allowing you to shoot more quickly and easily, without having to carry excess equipment.