Not sure if this fits the bill, but this is what I wear many of my ski days...
Mammut Eisfeld Guide SO pant
Thanks
@AlpsSkidad . I really like Mammut, they make nice clothing, and much of it is available in taal and short sizes. I have several of their regular soft-shell pants, and just got the GTX pants for my daughter in a tall.
I know about this pant (it's been out for a while). I think the hybrid design is a great concept for many types of skiing, but not for what I was looking for. This pant has regular stretch woven soft-shell on some parts, like the thighs, meaning no protection from water there.
I was looking for something suitable for multi day (spring) outings, where you might need the protection of a waterproof pant sometimes, but most of the time you don't need or want something too warm.
I was thinking now that there are several waterproof breathable materials out there with high breathability, and even air permeability, and face fabrics have gotten ever lighter.
This means that you might be able to get a pair of pants with thin fabric, with some air permeability, and long side zips, and be able to wear it even in warm sunny days skinning uphill. For most tours I would still just pick a stretch woven soft-shell for that use, but for longer trips where you need to cover all bases, it might allow one to pack fewer items.
And for days with variable conditions, switching/adding [ants is a pain, so it would be nice for that too.