I know it's a bit of a different take....
I don't allow CIM, and most clients know this from my website, however, the most common response i get when my client is about to 'u know' is a gesture. Weither it's a nod if im looking it him, or a movement away (if only slightly, lol) or a tap (gently of course!) on my shoulder, arm, etc. I agree with Amber that an experienced sp knows (and usually I do with my regs.) but sometimes it's hard to know a new client. Also the good thing about 'gestures' is they can also let me know to stop if they are not ready to cum yet. I don't find this method intrusive (after all I'm doing an already very intrusive bbbj, lol) Actually it's on the contrary, I find this method rather helpful. Of course a slap on the arm IS NOT COOL, use ur common sense here, guys! Of coursed for the guys NOT capable of common sense will get a chew out, as well they will never see me again. Hense why my BBBJ is YMMV, but CBJ is garrenteed(sp?)
Anyways, JM2Cs
kisses and cuddles
Katerina
xoxoxoxo