No, every bike path in a city inevitably has crossings or is laid out next to a sidewalk. People just do their random-walk thing (Brownian motion, really, sometimes) and wander into the bike path.
Sometimes you clearly see more people on the bike paths than on the regular sidewalks. And I definitely attribute that to its smoother nature compared to the fake cobbles you have in many places, amplifyied if there is a baby stroller in the mix.
