@achistef 

Actually, RBAC is supported for authentication for the secret scopes.

The thing is, when you setup the secret scope, Databricks is automatically assigning permissions through access policies. With RBAC - you'll need to grant the role on your own.

As a test:

1. I've created an Azure KeyVault with "Azure role-based access control" as a permission model.
2. Navigated to https://<databricks-instance>#secrets/createScope and created a secret scope
3. In Azure KeyVault IAM, added Key Vault Secrets User to the AzureDatabricks (fa5c679a-c02e-4f33-a397-7419315171b3) Application
4. Created a test secret and tried to access that from a notebook. Tada, it works.