There is an increasing encouragement of tutors working together on tutorials. This strikes me as a good idea and I find it quite exciting pedagogically. It should provide students with a wider range of support and also the ability to decide their priorities - for example, some sessions might be assignment focused whereas others might allow students to follow interests that might not be assessed.
However, the arrangements have been quite time consuming administratively as tutors have needed to coordinate tutorial timetables around the needs of another tutor. This is in addition to the constraints that tutors have anyway - perhaps including the needs of other jobs and family commitments.