Looks really good.
We've found out during quick testing that this tool has some issue's when / merging.
The converting notes into *.Pdf worked just fine on our system.
When converting scribbled notes into new *.Pdf's it gave some error's, as there seem to be some compability issue.
First was our general Manual who is on the reader, we've added a few scribbles on it, after merging/ converting, page 1/9 appeared, the software created a new page one in the form of a 1px page, and there was a page 11 also in the form of a 1px page.
As mentioned, at first glance it looks really good, if it's possible for you to take a more in depth look at the compability coverage, this tool might become the bomb.
