I agree with denu on that.
As for that lady who lectured you, Sir_Russell: Her opinion reminds me of the "clitoral versus vaginal orgasm" debate of a few years earlier... Some men wanted women to believe the clitoral one was not a "genuine" one, and the real thing could only be achieved by penetration (of course, duhh).
To each his own. Wouldn´t it be horrible if all people were the same?
Kind regards
Arria