Ironically membranes like this only work when they are dry, they get wet and you soak yourself from the inside since they become plastic bags. Hence the dwr on such things.
I gave up long ago trying to keep feet dry, one or two pairs or wool socks soak up a fair bit of moisture and you can change them out at lunch.
If you are going to get your feet a little damp it won't matter either way and if your going through puddles, or standing in water, leather or the membranes will result in the same result, wet feet.
Some feet are sweatier than others of ofcourse so some might get on with membranes better.
I change my socks out, I find it more comfortable that way.
I have the sealskin gloves too, very nice gloves but mine are too short to keep the water out.