Barbour waxed-cotton jackets are made for cool weather and cool drizzle, not for temperatures below 25 degrees (F). They are tough though, and can take a beating. Their appeal is to tradition and style nowadays, while Gore-tex is more practical and cheaper, and take no breaking-in time.
Here is On Barbour Jackets: Bedale vs. Beaufort vs. Border
Here is How to re-wax your Barbour jacket - Barbour's step-by-step guide (with good music)
And remember how to clean waxed cotton? With a hose!