[asid61]

How are you getting above max speed? You might get more power in a direction (like with a kiwi), but not more max speed.
The major advantage I can see to this is being able to run a crab drive without worrying about turning scrub, but at that point one might as well run mecanum or pure swerve. I think this would be usable for a team with low programming resources that wants to get into swerve (say during the build season) but wants a good backup plan for if it doesn't work out. Crab is significantly easier to program than full swerve.