This is basically what i do for bgs, works well esp in wsg. I still use Outfitter to swap dagger for ambush when i can gank someone, say anyone not in plate under 40% health. Just premed+step+ambush+evis=6k+ on cloth if ambush and evis both crit, less if your target is really well geared, but still 4k dam on high resilience as dirty deeds should kick in after the ambush or just pick targets at that 35% threshold. And if you can find some clothie in pve gear you might even see a 5k+ ambush:)