Some cradle Catholics find the liturgical provisions made for the Ordinatriates to be too conservative in style (and particularly in language). However I, for one, appreciate any attempt to broaden Catholic unity, and I believe that we need a certain amount of diversity in the legitimate practice of the Catholic Faith.
the last section of the new norms (article 15) deals with the Celebration of Divine Worship. the section reads:
§1. Divine Worship, the liturgical form approved by the Holy See for use in the Ordinariate, gives expression to and preserves for Catholic worship the worthy Anglican liturgical patrimony, understood as that which has nourished the Catholic faith throughout the history of the Anglican tradition and prompted aspirations towards ecclesial unity.
§2. Public liturgical celebration according to Divine Worship is restricted to the Personal Ordinariates established under the Apostolic Constitution Anglicanorum coetibus. Any priest incardinated in an Ordinariate may celebrate according to Divine Worship outside the parishes of the Ordinariate when celebrating Mass without a congregation, or publicly with the permission of the rector/pastor of the corresponding church or parish.
§3. In cases of pastoral necessity or in the absence of a priest incardinated in an Ordinariate, any priest incardinated in a Diocese or in an Institute of Consecrated Life or Society of Apostolic Life may celebrate according to Divine Worship for members of the Ordinariate who request it. Any priest incardinated in a Diocese or in an Institute of Consecrated Life or Society of Apostolic Life may concelebrate Mass according to Divine Worship.
While the new liturgical bookspromulgated for the Ordinariates are not mandatory for use in Ordinariate liturgies (they are free to use the Ordinary or Extraordinary Forms of the Roman Rite), the new norms clarify that the new liturgical books are to be used only within the Ordinariate. However when pastoral needs require it any RC priest in good standing can preside a celebration in an ordinariate parish. Likewise a priest incardinated into an Ordinariate may celebrate with the Ordinariate liturgical books in a non-Ordinariate parish with the permission of the pastor.
However, it is clear that a priest who does not belong to the Ordinariate, does not have permission to celebrate using the liturgical books of the Ordinariate (privately or publicly) unless he is helping out at an Ordinariate parish.