Finally got around to doing this. So I used Helterskelter, 10,000 iterations, and average player skill to get this info. Also I used my gears as a base for this (ilvl 357).
Silence spec without Veiled shadows:
Dps: 20,631.8
Time oom: 4.61%
The interesting thing here is is the stat weights.
Int:1.00
Spirit: 0.639
Hit: 0.4561
Crit: 0.3517
Haste: 0.3162
Mastery: 0.2967
Normal Spec:
DPS: 21,043.5
Time oom: 3.79%
Int: 1.00
Spirit:0.4557
Hit: 0.4759
Crit: 0.3843
Haste: 0.3651
Mastery: 0.3317
Gotta say I am a bit surprised by the second set of numbers. If anyone knows how to link/insert the charts and stuff please let me know. And now it is time for me to sleep