I've had that model since the late 1990s. It's very warm in summer but a bit chilly in winter. The pockets are good (5) but in the wrong sort of place to be 'useful'.
I prefer the "RAF" cold weather jacket which I find more all season.
Redeye02 has another one of the leathercraft products which he swears by for any time of year but it lacks the pockets which I value.