I traditionally have worn a hardshell ski pant when ski touring. The waterproofness is nice insurance against getting totally soaked and cold, but for spring missions where temps are going to be above freezing for most of the day I decided that a softshell pant would be better for breathability and some stretchy comfort.
As the snow starts to accumulate around the country, the long wait for the ski-touring season is over for some. Whether it is your first season touring or your 31st, be sure to read the Backcountry Touring Access Guidelines.