While I really like DEVONthink for iOS, I'm frustrated by the lack of shortcuts and user editable smart lists. I can't do much about the lack of smart lists, but Workflow gives me a very easy way to configure launchers for my most used DEVONthink documents and folders.
The entire workflow is just three actions long. The first action is just a dictionary with a nickname and a URL to the location in DEVONthink.
And if you sync Workflow and DEVONthink across iOS devices, this same workflow works on all devices. The unique item links in DEVONthink are consistent across devices.
If you're curious about other ways to use dictionary lists in Workflow for iOS, check out Tim's excellent article.