I have recently come back from a training course in Germany. What a fantastic, knowledge filled course it was. Christoph Rieser is one of the most knowledgeable saddlemakers I have ever met. He truly understands what the horse requires in a saddle to be able to move in the ways we need him/her to.
I was there to train in how to use EQUIscan & Topographer Pro. I am now able to take a template to have a tree specially designed just for your horse, to check existing saddle fit, to be able to alter an existing saddle, and to monitor back shape. Please see here for more details http://western-saddler.co.uk/equiscan-2/