So, I managed to dualbox Yakshi on DRG+GEO. Got around his piercing resistance by using Naegling and Savage Blade. DRG can put out some good savage blades. And I didn't even have to gear for dualwield cause capped magic haste and DRG's JA haste already had me a bit over capped with just /dnc.
I managed a win on the first try, but I think I was fairly lucky on the TP move timing. No cordon at all, and Tiiiimber only happened once late in the fight.
Acc tanked pretty hard part way in. Firstly, got hit with impact, which should be one hell of a hit to my dex, and thus acc as well. And I derped and didn't use a panacea.... And then my fighter's drink wore off, so I lost even more acc.
I feel like I should be able to improve my sets for this. I was pretty much just using my normal DRG TP set, and my impulse set for savage. But it's a little hard to tell what to change since none of the DRG sheets/sims support dualwield... I will note, single wield DRG can still get 78% haste... I wish PLD could swing that fast. Maybe /war and Fencer? Although in this case, with the steep acc requirement, the extra acc from offhand Kaja is a factor.
Anyway. DRG now has a strong slashing dmg option! I'm not actually sure where this stands in comparison to polearm dmg, but it's definitely got some niche uses.