I tried 3 pairs of road shoes in toe clips/straps. A Nike model worked fine. The lowest end Bont did not. The lowest end Bontrager worked fine. I scuffed up the soles of all 3. The Bonts didn't scuff well at all, which is probably in their favor.
The Nike and Bontrager remained pretty slippery, though - I fell once when I put my foot down on sand. I had to make sure the force was vertical when i put my foot down. If there was too much horizontal force in my step, the shoes slipped.