I'm not one to ask if the provider does it as I don't want to wreck the mood and I sure as heck would never do CIM or COF without a warning. It is a major turn on for me if I'm asked to do it or I'm encouraged or even begged to as "if" the provider really wants it. That's a turn on.
Destiny was the Syracuse champ at CIM. Wow. I remember seeing her for the first time and not even expecting it. I warned her and she just moaned and encouraged me. The unexpected dream come true gave me a huge orgasm. Now that was a visit I'll not forget.
This is a great thread. Definitely expands my list of who I want to see.