I have done this with Mistress Strictland. I must tell you,it can be very mentally intense. But, I did not find it painful. The physical sensations seemed rather limited. Ms. Strictland combined it with electro torture and it was truly a mind f---.
Now, I believe that Mistress Strictland really knows what she is doing. Also, there were a ton of other sensations going on. She knew I was not really into pain; more of a sensation junkie. I am certain she played accordingly. If I had not trusted her completely, I probably would have declined this activity. I still cringe thinking about it. I guess that is part of the mind f---.
Now, one time she had the electro torture going on and my whole body started vibrating. That was a trip; physically and mentally intense. Upon watching me "vibrate" she decided to "turn it down." Of course I was already in sub-space.
Damn. I have not seen her in several years. I may need a visit.
a-1