I have a Lowe Alpine running jacket, and having worn it in some pretty foul weather over the last few weeks, I can guarantee that it is waterproof, windproof and breathable! If I'm doing speedwork, I do get a bit of condensation on the inside, but that's all. The Waterproofing is Triple Point Ceramic rather than Gore-Tex. Although it was expensive (about #80) I knew it would be a good buy - I have a Lowe Alpine Triple Point walking jacket which is 6 years old, still waterproof and still looks like new, despite my best efforts to kill it.
I've never seen one of these running jackets
in a running store - I bought mine in an outdoor store. It is SO lightweight as well (I'm fussy about that sort of thing). But it can be a bit noisy when it's windy - occasionally I can't hear my HRM!
Oooh - it's just started to rain - I'm off for a run in it .....