In reply to TobyA:
Well, I’ve have replaced fleece/wool with a synth pullover (Inov8 thermoshell). I do get mildly sweaty in it, If I have too much on during the approach. But absolutely stellar whilst actually climbing.
Granted it’s generally colder where I live. But used a similar system whilst I took part BMC winter meet in 2014 or so.
planning on replacing it with a polartec alpha jacket this season (If I get out). But it seems that the alpha might be a tad too warm.