That is, in OpenLDAP the userPassword attribute is binary, even when its content is cleartext.

I would need to have an extra attribute of "String" type, containing that very password. Is it possible to achieve this by using slapo-rmw (or maybe translucent?), by creating a view that "offers" that "fake" string attribute, rather than being forced to duplicate the real source attribute into a second one, only differently encoded?