If you fully spec into banners - you can get some insane benefits. However playstyle may be a bit tiresome. Using Perfidy unique armour, Champion and autoexert + warcries to generate Valour. Defiance Banner gives all the speed and suppression, while War Banner can give 100% MORE physical damage.
All my socials and other useful links to spreadsheets.
►https://linktr.ee/woolfio
►Path of Building
Current unfinished Dervish build: https://pobb.in/ln216AZ39W9S