In reply to Sharp:
I love the snug feel of the VRG & also it's very useful pockets but it doesn't seem to be as warm as you might expect. I wore it on a hilly walk near Stocksbridge yesterday with a thin baselayer & light t-shirt, was ok all day carrying 8kg, temp about 5C.
When I'm climbing, usually the belay jacket goes on at the first belay then stays on! If it's blowy & snowy then the hard shell goes on earlier.
I have been considering putting my VR Alpine Light under the guide, it does fit.