Thanks; KDE integration is a big plus. But I haven't been tagging or rating files ... 🙄 so several of these queries are not useful for me. A fuzzy matching based on the whole file name seems to best fit my workflow... and there doesn't seem to be an option to fuzzy match, or match on the whole path in Baloo.
I was hoping dumping a long list of matches to fzf would give me a performance gain (because of Baloo's indexing), but right now the performance difference seems negligible.

I would love to have content indexing with full text search in files and emails. I used to run namazu / notmuch mail to index it (back when I would fetch it using offlineimap). But sadly my mail lives on an IMAP server now and isn't searchable locally. And Baloo was simply taking too long to index all my files.
I'm really surprised that an indexed search takes roughly as much time as a directory search. I guess it shows how much the filesystem and tools have evolved... back in the day, a full tree search through even 10GB would be slow and noisy...