Hopefully, this thread will stay on topic, prop safety, instead of straying any more into yet another APC vs Master Airscrew, etc discussion. Each camp has their reasons for choosing one over the other, and many of us use both. While the tips of APC props certainly are sharper than MAS, either of them will do lots of damage if they contact a body part.

The risk of injury from striking the prop is real for any prop. Painting the tips of props to the color of one's choice is certainly a good idea and anyone who is concerned about the visibility of the prop arc could do this. Personally, I just don't do anything that would expose one of my body parts to the prop arc. I really hope that some future law suit doesn't result in all props being shipped with day glow orange tips!