Rapha, nice but a bit pricey?

If you're racing or training hard the cross jersey is good with a merino or cold weather base layer down to about 3-5C for at least an hour but I wouldn't wear mine on a club run.

This is very true. For what it's worth, when paired with a LS merino jersey, it was my main "go to" kit for last year's winter. Often went out with a gilet. Really breathable, and I was warm enough on medium paced rides.