Interesting. I had not put the pieces together as to why the Scottish would have wanted the KJV as opposed to the Coverdale translation.

Yes, there are a plethora of Psalters that came and went. This one is of particular interest because it is all 150 of KJV Psalms. I also really like the split leaf format!!!

Is there information available somewhere as to the modern methods of pointing of which you speak? What is it? How is it different?

The split leaf format, so far as I know, is unique to Scottish psalters, whether prose or metrical. This permits of the ready choice of most any tune to go with most any psalm, and one isn't limited by the printed page to the tune printed thereon.

As for more recent pointing styles:
The Hymnal 1940 is a good place to start - it isn't exactly 'up to date', but is better than most older examples of pointing.

The Hymnal 1982 provides more recent methodologies, more interesting and musical than older ones.

One of the best current examples is The Anglican Psalter, pointed by John Scott, which contains a large repertory of chants, both old and new. (Published by the Canterbury Press and readily had from Lois Fyfe in Atlanta.) This psalter was originally published in 1997 as The St Paul's Psalter.

The Epsicopal church publishes two complete pointed psalters: one an Anglican chant version, the other a Gregorian tone version. I don't remember for sure, but each of these may be called The American Psalter. (There are also a similar two volumes, called The Canadian Psalter.)

Listening to the English choirs, and American ones such as St Thomas', New York, will open your eyes and ears to a bounty of imaginative and very musical pointings which often are most delightfully clever.

It is the studiedly dull and overly simple pointings of bygone times which rather naturally engendered that stumbly phenomenon known as Anglican thump. (Of course, if one were doing an historically informed performance of Anglican chant in the Victorian era, one would present a glaringly repetitive persistence of Anglican thump together with a rather oddly metred delivery of the reciting tone text. [Ditto XIXth century renderings of Gregorian psalm singing! Yes, there is a corresponding Gregorian thump, which still lives here and there].)

Two constants in Anglican chant pointing are: 1) always begin a cadence or bar within it on a strong (accented) syllable. The neophyte will often put a weak syllable at such points, and the result is unfailingly clumsy and amateurish. 1a) don't put the two prinicipal notes of a cadential bar on one weak syllable. 2) Taste and musical grace.