EFS Volumes with Fargate services

With the release of Fargate platform v1.4 EFS volume mounts are now supported. We’d like to move some work to Fargate, but it appears that Convox currently handles Volumes by mounting the filesystem into the host instance, and then mounting that into the container.

Are there inherent advantages to the current approach?

I wonder if anyone has explored moving to the Task Volumes, vs the mount indirection?

Perhaps more concretely, is there any plan to support volumes for Fargate services, and/or would such a patch be welcome?