Beta SL is not that durable in my experience... nice and light though, yup. ArcTeryx is making a new Scholler/Goretex hybrid but it wont be available until winter 2002, i got to see a prototype at VIMFF
I think, for ice, the Powershield items like MEC Pamir or Arcteryx Gamma, are the way to go. Just not for full on pouring rain or shower bath ice. Actually even my goretex got wet through when i tried happy boy though.... so..... nothing works!!!! Might as well just use $5 coated nylon!!