Personally, I feel that I do not have any place to dictate what a woman should or shouldn't do.
As for Paul's writings, it has to be remembered that some writings attributed to Paul are not really Paul's, but later writings by the established, patriarchial, orthodox (not Orthodox the sect of Christinaity) church, thus at one time Paul says all are one in Christ, and another (not Paul's original writing) saying that women have to be quiet and keep their heads covered.
Dreadnut, I do beleieve that Paul did have a vow, but cut his hair after the vow was done. If any one can find the verse it would be appreciated.
Peace and Many Blessings