This is my experience:
Before DC: of course we are equal, once we have DC of course I will pick up the slack on childcare. I will be able to sort out work so I can do drop off/pick up a couple of times per week.
Have DC and go on Mat leave: DH's life actually becomes easier - wife at home doing all the grunt work, food in the cupboards, clean clothes in the wardrobe, meals cooked. Starts making noises about me going PT....
DC and back to work: stupidly I went PT. Can count on one hand number of nursery drop off and collections done by DH. All sick days, early closures sorted out by me because I now have the "less important" job. DH is dead against childcare and any increase to my hours has been "but what about the children?" When he still offers no help Mon - Fri.
my DC are at school now and it is so hard to push back from the status quo. I have managed to change jobs but it is incredibly difficult to do when you are PT (in my industry at least). If I need to work different days/ more hours I am made to feel guilty for "dumping" the DC at breakfast/ late class - but he never offers any other solutions.
I will never be promoted etc because I just can't put the hours in and have to miss meetings etc - his career has flourished.
I am happy that my DC have been able to be at home more but it has been at a cost to my career (and my happiness). I am resentful that DH's life (midweek at least) has remained the same but I am always having to rush around to get to/ from school.
In my opinion mat leave completely changed the dynamic of our relationship. I wish I had nipped it in the bud.