I've always walked with a traditional jacket setup. Graduated from heavy longer goretex to lighter Event-style fabrics in shorter cuts.
But I'm considering trying a poncho instead. Having a look at the zpacks version, it's heavyweight (for cuben fibre), drawcord at the waist to prevent it blowing all over the shop, and big enough to cover the pack as well as my bum.
My thinking is that it'll keep both me and my pack dry, and have good enough airflow to not cause too many condensation issues. One item to keep both body and pack dry, and can also double as a groundsheet for mealtimes on damp ground, and also use it in the vestibule to reduce condensation in the tent. Under 200g.
Most of my walking is done in the Vic Alps. Anyone successfully used a poncho in these conditions? I like the idea of such a multi-purpose piece of kit, but primarily it still needs to do a good job of keeping me dry up there.