41/20/0 Is really fun! Last night my new little casual guild did ZA and we beat the timer on bear boss. I did 850 DPS on bear with Mutilate combat on my fairly new 70 alt Shoninjai. I was combat swords but I just find it way to boring solo for some reason so I decided to pick up the Mutilater offhand for 45 badges (All I had on that toon since she is new) and give it a try.
Observations:
My white damage is pretty dang good.
Combo point heaven. It's really easy to keep up 5pt rupture and slice and dice. I had so many combo points I even threw in some evicerates becuase rupture timer was so fresh.
On long boss fights and tough trash it's a fun build. On easy trash like Kara sometimes I ended up with wasted combo points becuase the trash died to dang fast. I was getting 1500+ Mutilates on both hands at times with drums up (so 3000+ total) which is fun for big number syndrome. :)
With our bear tank and no salv I was pushing the threat cap a bit a times and did vanish once mid fight to drop agro on bear boss.
Now I know Combat swords will outdamage it a bit. I'm not debating that. But for me even with offhand energy return I was not nearly as efficient with keeping up SnD/R as combat swords with my current gear. I also know 850 DPS is not spectacular for hardcore t5/6 raiders. My hunter can push 1200 but I am bored with him atm. Besides I just like 10 mans becuase 25 mans are to slow and take to much set up time for my pref.
So if your a casual player like me and you want a viable 10 man build don't be scared to try out combat mutilate. You might find this mysterious thing happens called fun!
Commence flaming about gimping your raid by not being a boring cookie cutter...... :D