I've gotten weak or negative feedback on my scratchboard promo card (previous post,) not that the design is ugly, but that it's too funky for the degree of professionalism I want to convey. So I completely re-designed the card today, using instead the black and white logo I created a few years ago. It looks much more elegant and professional.
I guess my scratchboard is too undeveloped for this purpose right now. My florals should look good on scratchboard, though. Stay tuned.