As with most rogues here for HM I swap between Sub and Combat depending upon the encounter. I've recently acquired the heroic version of Kargath's fist weapon along with the normal version of the Twins axe. I have the LFR version of the Twins dagger. This all happened this week so I haven't been able to real-life test the DPS of swapping these weapons around. When moving from Combat to Sub is it a damage gain to MH the 640 dagger and OH the 670 fist or is it always a better damage gain to MH the 670 first and OH the 655 axe regardless of the current spec?

As a side note as well should all my enchantments be for Multistrike to make swapping between the two specs more versatile? Should I ever consider enchanting haste?

If necessary here is my armory: -edit- I can't post links so ...

Region=us
Server=Hyjal
Name=Thetan

Thanks