I just got a Hi Viz Katmandu for Christmas and love it. I wear it over my heated liner from Powerlet. Now, here is the silly question. If its waterproof is it also windproof? The reason I ask is that my arms still feel a little cool even though the line has wires in the sleeves. Should I also be putting a windproof shell over the liner?
I must say I enjoyed riding yesterday with the little snow flake blinking on my dashboard.
Can't answer your Katmandu question about waterproof being windproof, though I think it should. What I CAN tell you is that there are a lot of jackets like my Rev'it Sand that come with a rainproof zip-in liner. Translated, that means the outer jacket will absorb A LOT of water in heavy rain (unless you find exactly the right washing then treatment products,) though if you do everything right you will stay dry. These jackets with the rain liner in and electric jacket (with a controller) are great for staying comfortable from temps above 50 to below freezing. No disrobing to add or subtract inner garments - which is why I think all insulated non-electric liners suck. They will be perfect at only one temperature. Temperatures can vary considerably on even a few hour ride and it is great to dial in a little more or less heat as needed. For light rain (or snow) these jackets are great. Also fine if you will be coming home and the jacket can hang a couple days to dry out after a heavy rain.
In the summer on trips, I skip the rain liner and replace it with an outer rain jacket - which is easier to don or shed in summer showers. Mostly take the electric jacket though. (If you are thinking of buying one, take a look in this forum at the problems people have been having with Gerbings of late.)