Hey, have you seen the brief write up Dan Harms did on it?
I haven't bought it yet due to waiting on the better binding to come out. For me, the draw of the SSM is mostly the historical aspect since its 14th century. I'm into trying to piece together an understanding of how these Solomonic operations that may have appeared elsewhere originally were performed, and how they have shaped the later family of texts as a whole.
From a practical standpoint, it looks like from the blog if you happen to be interested in expanding on how you may be able to perform protocols related to the Almadel, the Liber Juratus or Ars Notoria the book would make the biggest impact.
If its not your main area & you're not in a rush the get the info, I'm sure people will be posting their specific insights soon, if they don't already have them. If the updated copy comes out soon I'll report back.