I've got an LS20 that's bead blasted that I've EDC'ed for the past 6 months. It has scratches on the non-bead blasted parts but that might be because only the interior hand part is bead blasted. The very top near the tail is where my scratches are and that's the part that sticks out of my pocket when it's carried. The clip, which is diamond-etched and sand washed (?) doesn't have a scratch and that is constantly on the outside of my back pocket.
Looking at the Haiku (don't have one . . . yet!), only the interior of the light is bead blasted so I imagine it wouldn't pick up scratches as easily, just like my LS20. Please place my opinion where it belongs, though, squarely in the "guy who doesn't have a Haiku but who does have a bead-blasted model of light from the same dude and who's carried it for half a year," category. If anyone can offer a better opinion for this question, please do! :candle: