The root jail system lives in the base system that both UDev systems will receive the kernel notification from the netlink so you need to take care about race condition like upload firmware etc..., but the DBus system (system bus) will stay in isolation space because it used the unix socket to make communication but the system bus' unix socket must be take care. If you use mount bind to bind used folder form Base system to root jail system that the system_bus_socket can't be located at the same path.