I used to taxi lightly loaded 72s with the #2 in reverse occasionally to save on the brakes, and when operating on ice/slick taxiways on occasions would use all three engines for braking and maneuvering.
It is standard procedure to use the center (#2) engine reverse thrust on the Falcon 50 and 900 to keep taxi speed down. The only problem that can be encountered is with a strong tail wind you can get exhaust fumes into the cabin air system.
However on a lot (if not all) of wing mounted jet engine aircraft reverse cannot be used below a certain speed, such as 60kts idle and 80kts with any increased thrust, due to possible FOD.