A popular tactic with Sword-n-Dagger was to swap from parrying with the dagger and attacking with the sword, to parrying with the sword to attack with the dagger. . .which could easily be done with normal one hand combat rules to switch back and forth. . .but the feint benefit inherent in that swap-n-swap is absent in the rules. . .
Also, rather than dual attack, generally two weapon attacks vs one weapon one weapon was used primarily to parry, deflect and control the enemy weapon, while you stab or slash them with the other. . .which is exactly the full OB right hand/Full DB left hand scenario which the rules as is specifically are written to stop.
I think HARP actually distinguished the dual weapon attack method from the two weapon attack method.
I have spent pretty much time with two weapons in LARP combat, and the difficulty of TWC is very much that you can't have attention on more than one weapon at each moment. You can do practiced standard moves with your secondary weapon, but for the second weapon you must depend on lots of repetitive training for it to be of any use. The effectivity of TWC comes from that you can change what weapon that is the primary weapon and get a surprise attack. It is harder to use your off hand to parry with, but it is small thing compared to everything else that make combat hard to learn.
That feinting aspect of TWC, or at least, misdirecting someone to one weapon to use the other, isn't really covered well in RM, in either one or TWC. . .
A certain degree of deception and misdirection should be assumed to be part of the OB/DB split, but it's very abstract. . . .but the fact it's already kind of included in the base concept makes it hard to simulate when you use it more than in the "it's kinda part of the whole OB/DB" thing. . .
I was never really 100% happy with the RM2 skill method either.
Anyone ever come to a really good feint method?