To the OP .... (weird user name that I can't remember .. !!)
Like hippie boy I've had the BMW rally suit suit and have now moved on to a klim jacket (Traverse not badlands .. more on this later .. ).
The lined BM suit was good, completely waterproof, but when it got very wet, it weighed an extra 3 KGs or so, and also had the disadvantage of creating the refrigerator effect and made you very cold.
I remember this day;
The jacket had virtually doubled in weight and I was absolutely freezing - poured with rain all day ... Whilst I remember thinking, great jacket at being waterproof, It took days to dry out. This was the first day of a two day event and putting it on the next day ..... Yuk!!! Horrible! I remember my trousers getting so heavy, that they were pulling down at my waist.
The Klim lattitude jacket is just a shell, it's the bonded goretex stuff so water just beads off it and it can't soak in. I particularly like this jacket over the badlands, because I get to choose what I wear underneath. In the summer I may wear just a T-shirt (probably not ideal protection because the jacket is now quite loose fitting and I guess if i binned it there's a good chance that elbow, shoulder pads etc might not sit quite where they should). In the winter I can fit base layers, heated Keiss jackets etc underneath it. Spring / Autumn i can mix and match what I want.
Having tried both systems, for me my Klim beats the BM Rally jacket hands down for body heat control, not soaking up water and flexibility of what to wear underneath.