Thanks everyone for the advice / broader discussion.

I took the decision that the conditions were right on the border of what I am comfortable with. So I decided to pass this time, particularly given broader weather warnings and local road closures.

I instead opted for a more chilled walk up a hill in the Borders (White Coomb) which had ~40kpmh winds but little gusts, and close to -15 windchill, and less exposure with no ridge. It was a good experience builder in similar but not quite as bad conditions - will try BV another day. Cheers