The doctrine was never really "no women in combat", but no women in infantry/tanks/artillery or units whose principle mission involves combat. But a woman 7 ton driver can find herself in combat just as often as her male counterparts. There are plenty of women who've ruined insurgents days in Iraq leading convoys.
The +100lbs of gear that an infantryman wears into combat throws these arguments out the window. Most women just can't handle that and perform at the same level. And brute strength isn't just a nice thing to have, its a necessity when you've got to carry your 175lbs buddy out of harms way, plus his +100lbs of gear, as well as everything you're carrying.