Tim, thanks for the detailed reply.
However, I can't ascertain whether or not it would be beneficial to try it.
I see two 'no's' and a 'possibly' in your answer.
Both my guitar top and the bridge plate are level.
I do like the concept of the violin soundpost, and its application to a guitar, though.
I suppose the only way would be to try it and see what happens...
Looks like I'm the guinea-pig.

Seamus