I don't have any further information. It was over a decade ago that I became aware of this. I brought it to the attention of a very versatile mistress I was sessioning with at that time and tried to get her to fashion one but she demurred.

I suspect getting that the setup for the procedure needs to be carefully calibrated for the specific victim. Sutton was a female supremacist advocating lifestyle Femdom. In that context this device was effective but for prodommes the need to recalibrate for each client would be a serious drawback.