Thank you for the clarification.
It is possible to run Formativ applets in the environment you describe. If the NetWare client is not installed, Formativ will use LDAP to communicate with eDirectory/NDS.
The Formativ ReadMe and User Guide state that:
Novell NetWare Client is required for the Schema Wizard administration tool (Formativ administrators only).
The Schema Wizard snap-in for NWAdmin is used for administration of eDirectory/NDS. The Formativ snap-in for ConsoleOne can be used instead, and it does not require the NetWare client.