Love the jacket. I’ve got that one too, in bright red (to be seen!).
Get a pair of fjallraven trousers they’re not waterproof but water resistant then pair then with these for when you need them. You can adapt a lot of their trousers with wax to make them more water resistant and then remove it for the summer so you can use them all year round.
Ah yeah i do see a lot of positive stuff about fjallraven , at the moment i just have Craghoppers and el cheapo overtrousers but they are totally wetting out, looking forward to trying the jacket out