Not with any WL's, but a couple of friends of ours had some electro-pulse toys. The wife and I went there just for a bit of exploration. We didn't get into anything sexual with them, but they showed us some rope-binding and had them operate the pulse toy on us. Not exactly "painful", but it is one hell of an adrenaline kick. It's more the shock, and the loss of muscle control that does it. Frankly, I absolutely loved it, I even teased the wife a few times until she cranked up the voltage or amperage, whichever it is...