Sizing Vs Flint & Tinder

I am looking for help from anyone who has a Flint & Tinder Flannel Lined Waxed trucker jacket. I have one that fits perfect in XL.

I am wanting to purchase the Barbour Ashby jacket. Since it is a bit more tailored, should I get it in XXL or just stay with XL?

I have never owned a Barbour.