I don't like them - they make my legs sweat too much. I have a pair I bought for walking in about 15 years ago and I think that I've only worn them once. I was getting nearly as damp from perspiration as I would have got from the rain.
I prefer to wear cycling tights. I have a heavy duty pair with a waterproof front and a breathable back which I found to be a good compromise in really bad weather. Lighter showers don't bother me much so I'd just put up with them.