Also, increasing the (M dagger) ability to occasionally triple your damage means that your average damage is increasing by about an additional point per skill level, when your average damage is around 50, and closer to two points per skill level once you're wielding two daggers.

To maximize your results, I'd advise you to put twice as many skill points into GM Dagger as into M Armsmaster. After converting from skill points to skill levels, that means keeping your Armsmaster skill at about 70% of your Dagger skill. So don't pump up Armsmaster past 10 until Dagger is past 14.

(The Armsmaster speed bonus is also important, but there's a ceiling on its utility, which you may reach pretty quickly with daggers and a high Speed stat. If equipping daggers of Speed doesn't make you attack any faster, then you've reached that ceiling.)

BV