This answer to the question How often do reaction wheels require desaturation, normally? says:
One practical example I know of is for a 6U in GEO that is always sun pointed, there's a thruster desaturation once a week. (not enough magnetic field to use magnetorquers)
I can't tell if this is a simulation or real data from an actual cubesat in GEO. So I thought I'd start by simply asking Are there cubesats in GEO?
If so, is there just this one, or several?