The only dual wielding available should be for two daggers, or a rondel+dagger combo.
Which would cost double APs to use, so each strike with dual daggers would cost 4 APs and some special attacks can be created that would cost more.
As ive repeatedly said and suggested several times already.
That would keep things a bit more "realistic" not for the purpose of realism in a fantasy game but for the purpose of not making things way too silly and cheap.
There are different styles of fantasy and ranges of fantasy in them, so one such single global rule cannot be applied for all and is therefore nonsensical.
For OS, dual daggers or rondel+dagger combo - at double of AP cost, - would be very fitting.
It would enhance roguish builds diversity a bit more and be cool as an option to consider.
The animation is practically already there, which is a very important step to consider when suggesting these kinds of changes and additions.
