For Vincent in Slack

models.py

class MyQuerySet(QuerySet):
    def is_trial(self):
        return self.filter(is_trial=True)
        
    def isnt_trial(self):
        return self.filter(is_trial=False)

class MyModel(Model):
    trial = BooleanField(default=False)
    
    manager1 = MyQuerySet.as_manager()
    manager2 = Manager.from_queryset(MyQuerySet)()
    
# Usage is then:
# MyModel.manager1.is_trial()
# MyModel.manager2.isnt_trial().filter(pk=5).filter(woof="lol")

# By using a single named method, you make it easier to find where it's intentionally used, vs just trying to find 
# all things like .filter(product=1, client=5, is_trial=variable) or .exclude(Q(is_trial=False) | Q(product=1))