Can Quicksilver be configured to open folders in new Finder tabs? Is there a way to configure Quicksilver so it will open folders in new Finder tabs? Right now, when I use QS to navigate to a folder location and select the "Open" option from the actions pane QS opens a new Finder window at that folder location. 

Now that there are tabs in the Finder, I'd like it to bring an existing Finder window to the front and open the selected file in a new tab. Is that even possible, since tabs are a new feature of Mavericks?
For folders, as with any other type of file, Quicksilver just asks OS X to open the file. The OS decides what to do from there.

It’s the same as typing open /path/to/folder in Terminal. So, if you can get that to open folders in a new tab, Quicksilver should start doing it too.

(I think Finder would need a preference to control this behavior, and I don’t see one.)