Paul:
I read it about a month ago, as I was the proud recipient of an advance copy, one of the benefits of still being a members of the Golf Writers Association.
I enjoyed the book. I hear there is another very similar book also in publication and due out soon, so I will reserve judgment until I've read both of them.
The one fact which was of great interest to me was that Old Tom Morris served from 1851-1864 as the greenkeeper and professional at Prestwick, before returning to St. Andrews after the death of Allan Robertson. This fact casts a different light both on Old Tom's victories in the early Open Championships (he was playing a course he designed and where he was host pro), and also on the victories of Young Tom (who was born in Prestwick and grew up playing it, not the Old Course).