Hollow gives like 37-38 bleed if you invest in luck but you have much more physical dmg and you cal slap a carthus rouge when you wish to bleed it takes bleeding up to about the same bleeding as a bleed infusion a bit less though so some enemies might require an extra hit an rarely they require 2 hits but very very rarely. Bleed infusion is nice if you want to inflict bleed and are either too lazy to apply carthus rouge or don't want to spend souls on buying carthus rouge. It doesn't cost much though like 1000 or 1500 something like that. Me personally i prefer hollow. It saves me 5 levels of luck it deals more physical dmg so if my opponent happens to be bleed resistant or immune i don't have to worry about doing stinky dmg and when you use carthus rouge you are absolutely superior to a bleed infusion.
You can try but Blood Warden Twinblades is peak edge, it's scientifically the edgiest name possible. Remove a word and it's exponentially less edgy, add an extra word like Abyssal or Coldsteel and it passes the parody threshold.