Are we thinking about the same thing? Some clarification might help me in evaluating my position.
Marxism is rather more egalitarianist than feminism. When implemented properly--not that it ever is, and not that I don't fear its proper implementation to begin with--Marxism does not put special emphasis on gender, except to say that both genders should be regarded equally when possible. The folks I've met who grew up in Hungary, China, Bulgaria, etc., and who later attended graduate school in the US, UK, France, etc., frequently commented that the ratio of males to females is so high in those Western societies compared to those to which they are accustomed. Female physicians, female scientists, and female researchers are not uncommon in the former Warsaw Pact countries. One positive aspect of Marxism is thus that it is egalitarian regarding the sexes. For that reason--and, frankly, for a few others--I have a grudging respect for Marxism on some level.
Feminism, on the other hand, is fundamentally anti-egalitarian and unabashedly sexist. In this aspect it is no different than masculinism, and it is therefore something that I could ever support on any level. It is a philosophy based on fear and contempt, and one that mongers fear and contempt.