My BB basically quite Pampers at home and we are starting to quite during outdoor and seems quite successfully as we will regularly ask him to go to weewee and when he say "yes", it's really true. Some people say it is better to train him to quite pampers while at home AND go out, otherwise, it's hard to quite.
However, when we go to restauraunt, maybe stay too long and boring, he will sometimes say "weewee" but not true.