My experience has been the same as Kodiaks.I have had two sets of Rivers West the original and the LAW series.I sold them both because of the amount of walking at grade that I do I was sweating my butt off.I will now carry light rain gear in a pack on days that threaten bad weather.Rivers West is very well made,but it just wasn't working for me.
I have recently bought some Dutch Harbor rain gear.Very light and very quiet for rain gear.I will see how durable it is.