It would not be the main source for biblical text. It is definately a Bible centered church.
This is a question that might be best addressed to the Pastor or staff. The times that I have attended there, the congregation is a very mixed group of young to old. I don't really remember hearing the scripture readings coming from KJV, but I was there for the annual Kirkin' of the Tartans so that may be a bit different from the usual order of service.
Thanks! Your answer is awaiting moderation.