i use kphotoalbum to manage photos. mainly because it has a great tagging interface. what it doesn't have is good folder management. it will read images in whatever folder structure is there, but it is clunky when it comes to browsing photos with that folder structure. i can either navigate folders or i can see thumbnails sorted by time. i can't see thumbnails in the folder structure.
to augment that i use a plain file browser. nemo in this case with the cover-thumbnailer extension works great. i could use another image manager, but then i'd be switching back and forth between different image managers to have the features i need. so why should i, when a plain file browser just works
Searching photos using text, handling live images, displaying on a map by gps coords, categorizing people/places/albums automatically.
None of this is handled by a filesystem or jigl.