I use my Note Pro with Zotero for both academic and legal purposes. What I do is use the Zotfile extensions to “send” pdf docs from Zotero to the device - this can be done by setting a folder pathway in zotfile preferences, which can be a local file on your device or cloud storage (i use both onedrive and dropbox folders that sync automatically by way of android dropsync or onesync apps). Then, when I want to work with the annotations or files back in Zotero, I just right-click the file and “retrieve” it from tablet folder. A nice perk to this setup is that I can use the Neoreader app on the tablet to highlight and annotate, and zotfile will automatically extract these highlights into a zotero note when I retrieve the file from the tablet. I can then generate a zotero report that has all the highlights at my fingertips when I am ready to write. This setup is seamless and efficient for my purposes.