Only thing I'd be worried about on the Sagasinger is how it'd play with enspells. If it could never trigger with one up, I'd otherwise put it somewhere around a STR shamshir. The HP/MP does make it a nice Convert piece, assuming people still care about a set like that these days.

The dagger is potentially sexy. Would be interesting to see it mathed as an Almace off-hand compared to DA% sword, then I guess things like Knife/Joyeuse or Twilight/Knife with Evisc spam.