Well for me I need at least some words spoken.  I can't go to a booking with No words of small talk.  Its not like I need your vitals but it helps me know your at least educated, intelligent and it starts my erotic engines.  Think your missing out on quality if you don't.

I agree with candie, but if you feel the convo has gone on for too long, why not try casually suggesting "we get a little more comfortable now" I think everybody know what that means