It's also a shame (depending on which side of the table you're on) that the knives are, well, knives.
But I see them as being the rogue counterpoint to the Band of the Inevitable, Tatulla and BoD. UDE's not trying to gimp weapons rogues entirely but level them down a bit to expand the field of playable builds.
Think combat rogue. The bounce effect of this card is especially powerful if you're sandbagging, say, a Blade Twisting in your hand when you expect to see a board clearer like the BoD go off.