"The Authorized King James Version shall be the text used in the public reading of the word, and the Scottish Metrical Psalter the text for singing in worship." Presbyterian Reformed Church
Only thing I could find in their constitutional documents. The web site says: "The church employs the Authorized King James Version, and the Scottish Metrical Psalter."
Nothing in the constitutional documents about private worship or personal study.
Most I've met hold to the Reformed school of the KJVOnly theory, which differs mainly from the Baptist school in that they believe that there are possible corruptions in the underlying text of the KJV, but think they are minor to the point of irrelevance and believe the KJV should be the ecumenical, or unifying Bible of the English speaking world.