The Porvoo churches are two branches of the reformed tradition. This is visible to a certain extent in their liturgy and structure. But there can also be a difference in liturgy and structure within the same church family.
Members of one Porvoo church are likely to find both similarities and dissimilarities in the liturgy of another Porvoo church. The structure of the liturgy will be very similar and they will recognize the same words of praise and thanksgiving in both traditions. Sometimes it is the external customs, such as when to sit or stand that people notice most. Everyone should feel at home participating in the liturgy and enriched by learning new ways of worshipping and celebrating together.