Go "Versatile" instead [this is even better for an integral heavy stubber]: +3 damage on the first successful attacks [times how many hits?], good extras to hit, and… a decent anti-tank weapon with Opportunistic.
1d5-2 times twenty integrity instead of bouncing off? YES PLEASE
Well, unless you're tzeench-aligned with a slayer limb. Then you may as well just up the output.