When I import an Inkscape file into Scribus the text is always vectorized. Is there a way to import editable text into Scribus from Inkscape?
Given the choice I'd never lay out body text in an Inkscape file destined for output via Scribus as Scribus handles this sort of text so much better.
That said, if you've inherited the files or there's some other compelling reason behind your question then using pdf as the intermediate file might work.
In Inkscape's Save As pdf dialogue there's a "Convert text to paths" check box which should be left unselected and Scribus should happily open the resultant pdf with editable text.
Along the way you may have issues with fonts but it'll work by and large.
If you've got the choice though I'd recommend letting Scribus handle the text and leaving Inkscape to provide your vector components in svg format.