Here is some info about team 5687 Outliers and their differential swerve they ran this year.
Edit: On mobile I messed up the highlighting.
But here is the statement from the team themselves:
Would we recommend developing a differential swerve? For most teams no. I don’t think there is much of a performance advantage (unless you really need the torque), and there are significant disadvantages. Additionally, they take a lot of time to develop properly and that energy that would go into fussing with the swerves is probably better spent elsewhere.