But this would effectively the setting for the default provider from META-INF/validation.xml; Shouldn't the CDI-injected validator (factory) be (which is exposed via JNDI, @Inject and is used by JPA) based on that setting?

I came across this when looking at HV-837; This test expects the VF type as obtained from the XML-configured default provider but it actually isn't atm. because the VF we get from the container is always the HV type.