Yes. Karem has constructed a ground test stand and plans to test a rotor with IBC (Individual Blade Control). The EMA roller screws will be in the turning rotor frame of reference, requiring all electric power and cool fluid to pass through a slipring/ swivel.
CTR, a correction - the electrical power is generated in the rotating frame, not the stationary. This was done explicitly to avoid the reliability problems associated with sliprings. I suspect the oil cooling system is also contained in the rotating system... no real reason to pass it through a hydraulic coupling if the purpose is for cooling the electric actuators. There’s room for an oil cooler.