I waterproofed this boot with some snowax, and use it for all sorts of weather conditions and I never have had a leak or wetness inside of any kind.
The boot keeps me warm in as low as 30 deg weather, rain or shine.  It's hard for me to get on, since my instep is pretty large compared to the boot opening.
But that's ok.

Durability seems quite good.... I don't see any signs of failure like I have seen in some reviews. They seem quite solid and on track to last for 10 years plus.