Language and selecting a default language for a project

Im having a bit of a problem with languages.

in a service project I did translations for icelandic for all fields and set the default languaga of the project as icelandic, yet its still showing in English.

After looking at this in more detail I realised that my user setting (the default one I havnt changed this) is English.
What is the point of translating a project and having it in many languages if I need to go to my user settings and change my language ?

We have many projects and in some I would prefer to have english as default and some icelandic.
Is there a way I can get the project setting to override the user setting ? It would be nice if I could set the user language to “Project” instead of having it set to a fixed language that overrides the project setting.

Any thoughts , insight or information on this would be appreciated.