If the inerference is simply conducted down the wires then clearly there would not be an issue.
However since we are talking about high power high frequency switching I did not think it was too unreasonable to speculate that the interference
may be radiated form the power wires.
I guess that if the system has been tested for electromagnetic emmissions then it should be fine for use.
It is early days, and i know of only one individual who has recently purchased an SS GTB at our club. If this starts to cause other racers problems we will have to consider not allowing them to be run.
If there is an issue I would assume others would also notice in the fullness of time.
Dan... Simply hypothetical at this stage.