[css3-selectors] Should pseudo-classes "of type" discriminate based on class selectors?

I think it makes sense for CSS3 pseudo-classes ending with "-of-type" (i.e.
nth-of-type, only-of-type, first-of-type, etc.) ought to take into account
not only their  elements, but also any class selectors attached to the
element.

i.e.

div > p:nth-of-type(2) {}

Would affect the second p directly descendant of div.  While on the other
hand...

div > p.foo:nth-of-type(2) {}

Would affect only the second p with class "foo" directly descendant of div.