That was just a test after Scribus failed to import the pdf file produced by my previous program PagePlus. The 32 bit version of PagePlus has problems after about 30 odd pages, although the program has a book feature that makes it very easy to combine the separate files designed for creating a book with chapters.
So I experimented with Scribus and after the usual beginner frustrations with this program I've gotten to like it and will use it for the next similar project, which is to produce a directory for all the residents of an independent living community.
Had PagePlus not had this large source file problem I probably wouldn't have bothered with Scribus, I'm retired and am no longer a heavy user. PagePlus does have a 64 bit version now, so that may work with the larger file, but unlike Scribus the upgrade costs. I haven't tried 32 bit Scirbus to see if that has problems with the large input file.
For information, I tried importing various pdf files, manuasl etc. with both DTP packages and LibreOffice writer. On the whole, LibreOffice did quite well in most cases. My resident directory test file imported, but images size were off somewhat and overlapped.
None of this is a deal breaker, I intend to stay with Scribus and look forward to what 1.5 offers when it becomes available.