It's a free country so if I am willing to go to the mat in a friendly sense (meaning not in court) I find it unprofessional if a lawyer would refuse that. Often they ended up taking whole section changes from me verbatim. Usually after they found that I would not budge on that issue. I gave them little bits elsewhere to save face. Such as jurisdiction, as long as it isn't in a state where the legislature is crazy.
Then you can buy the island and the matching biz jet :-)
[...]
But one has to dress up :-)
Sometimes that even has to be done when it comes to design wishes. "Bummer! Isn't there some loophole around Kirchhoff's law?".