There are a few recipes here:
[url:14bm62oy]http://www.speidels-braumeister.de/Beer-Recipes:_:25.html?XTCsid=j945i78ru17gc38blm0e05b126[/url:14bm62oy]
As you can see they are mashed at different temperatures; its this temp profile that gives them their unique character.
I'm no expert on this but I know that temp profiles play a major part in the amount of proteins and other compounds released.
I have loads more recipes somewhere if I can russle them up. In fact all the European recipes I have seen require multiple temperatures.
Not that there is anything wrong with the tried and trusted mash ton, its just that this system seems to open up a lot of additional possibilities . . .