I hate waterproof trousers, such a faff to put on and off, I can use two options to keep dry, a long waterproof coat which cost £15, or I use a homemade rain skirt, which my wife's friend made for me, cost me £10 and a bottle of wine for her. As long as I'm wearing my Rab waterproof gaiters I stay dry and do not experience sweaty areas.