Waterproof, windproof, properly breathable, durable and can yank pit-zips open for climbing. Proper hood but no rear pockets. Not particularly hi-viz if you have to stray onto the road.
Have used it for mtb, walking, climbing, waiting around on a welch hillside, avoiding getting soaked on way to pub.
The only jacket you'll ever need (which is good because they are bleedin' expensive).