Come back, OP, and tell us your thoughts on reading the thread!
(Likes more OP engagement, clearly feeling needy)
My H is a feminist. If he's speaking to women who say: no, men can't be feminists, they can be allies he says: cool, call me an ally, sign me up! I'll help run the creche during the conference, and help organize the tea... because he's feminist
Some men insist on being not just A Feminist, but The Feminist, and telling other women how to do feminism PROPERLY.
These men are not, imo, feminists at all. A man's place in the feminist movement is a supporting role. Women cannot be liberated from without.
That said, there is a very very very great deal that feminist/feminist-allied women can do; because they have (1) Access to men's attention and respect in a way that women do not and (2) Access to things that men say to other men, but perhaps wouldn't say when women are around. That gives feminist/feminist-allied men great power and great responsibility. Challenging rape culture, explaining the ways in which all unknown men are Shrodinger's Rapist - demonstrating lived equality when it comes to taking time off work to look after their sick kids, etc etc etc.
I happen to have lucked out in the DH isn't just someone who calls himself a feminist, he does the work. He reads, he signs petitions, he challenges sexism and insists on safe, respectful spaces at his work (which is a powerful move, specially as a male teacher to teenage boys), he is an equal parent (eg, doesn't think the boys are 'my responsibility' and therefore is happy to take off with them for enough time for me to go to a conference, write a blog post, whatever) and we as a family donate to women's refuges and local rape crisis organizations.
I 'lucked out' in that I met him at all, but I'm not lucky (though oh so many other mothers tell me I am!) ... I'm demanding and picky, and I wouldn't have chosen to live my life with anyone less.
Incidentally, we're raising 2 boys (1 here, 1 on the way) with lots of books starring strong female role models, dolls (so he can push the pushchair like daddy! Give baby a bath, like daddy! change a nappy, like daddy!) and masses of love and support in their own feminist journeys. I consider this something I owe other women (and their daughters!) - all men should be a feminist as my H.