You could check out the build from non-ssf section of this guide. Not sure how much tankier it is but has more DA and Phys Res. Also killed Ravager. Not claiming it’s the best as I didn’t work long on it. I wouldn’t play with Sandstorm prefix on the off-hand as it was nerfed, just some good Acid damage one.
Witch Hunter DEE is also worth considering as it has Blade Barrier and can get stupid amount of Phys res dual wielding with Bitter Winds scepter. And low Pneumatic Burst cooldown. I see that I also mentioned grabbing Scales of Ulcama but that may decrease damage too much.