ORIGINAL: Big Slick

Yes I have one.

The blades are RAZOR sharp. Although the sheath hides much of the blade, it's no barrier on contact, when the blades slice right through and continue into the target. In fact, you should be cautious when pressing down on those sheaths with your finger, as that blade will cut through them easily.

As far as becoming dull with use, the individual blades are not intended for multiple use, as with most bladed broadheads.