easier to match the paint color and paint the brick work. it will be a lot easier than trying to clean it off.
that you or he can feel any paint that is stepped on.
make sure you are careful when pulling up drop cloths and picking up used cans, brushes and pans. the last thing you want is a trail of paint left through your home after the paint job is done.
if you get paint on yourself during the painting project, you can rub baby oil on your skin before you get into the shower and it will make the paint come off much easier. 