These daggers are fine. What's not fine is ability to use them with a shield (that shouldn't be possible because of abuse potential) and their low STR requirements. We really don't need more of those silly builds around, and if you put higher STR requirement they'll simply banish because they won't have 10+ ATH anymore. Although, even with 7 ATH and light armor I can phase in, get a strike and phase out before enemy is able to hit me.
I really don't mind those little buggers who use rondel or long dagger without a shield. But those who use a shield are retarded imho. It's a weapon meant for chamberblocking, not for punks who can't manual block for shit.
Edit: My suggestion is to rebuff both daggers to old damage and speed values but put not usable with a shield tag. We really don't need more shielders in this game, all you did since 2010. patch was buff shielders, directly or indirectly. Shielders might be historically accurate class but as long all it takes to block an attack is press or tap right button, shielder class won't be interesting to me at all. And it shouldn't be dominant.