Everytime a person turns on a heater or ac unit in their home it causes positive pressure to build in the home. In the case of heat the moisture builds in the wall cavity as well as cold air returns. So Yes, there can be pressure pushing the moisture out. More accurately the + pressure pushes the air which condenses moisture on the cooler tyvek which usually wicks the moisture out. I have seen a super tight exterior paint job trap the moisture between the outer wall and the sub siding wrap. Tyvek becomes a rot assistant in that case.

As to the original question....I don't know. Have you thought about just trying it? What about Gore-Tec or whatever that shoe material is?