In reply to
I'd agree for a jacket that's purpose is an active piece this level of insulation seems too much, it's more akin to a belay jacket but as already mentioned I'd want a belay jacket to err towards less wind and weather permeability not more
In general I'd prefer to have something capable of excellent sweat management next to the skin and rapid drying time, eg vapour rise, polartec alpha, driclime, Kinesis etc or a grid fleece, then I would combine this layer with a lightweight xenair or similar if things got really cold or activity levels dipped eg a 40 or 60g xenair
Unfortunately I don't think they do a 60g weight xenair, I think it would be a useful weight, also I wish they'd do more hood less options, the lack of head and neck mobility from multiple hoods drives me crazy