Thought you were in Ozz? Does it get cold?
Anyway, I've had a Belstaff Celsius jacket for the last five winters, and I've done a fair amount of miles in it and in all weathers - down to -5 degrees.
I have found it totally waterproof and very warm. I don't feel the cold too much so most of the time it's warm enough for me (too warm at times) without the thermal inner jacket. Put the thermal liner in and it's sweltering unless the outside temperature is at the aforesaid -5.