Unsupported variant of .FAB/.FABTEX (Art Academy: Home Studio)

[SuperFromND]

Game Name: Art Academy: Home Studio (Art Academy: Atelier in PAL regions)
Console: Wii U
Format extension(s): .fab, .fabtex(?)
Type: archive

First 8 or more bytes of the file(s):
.fab - 46 41 42 5A 00 00 00 01 - FABZ
.fabtex - 46 42 52 43 00 0F F1 A0 - FBRC

More details:
This game appears to use a variation of the already-supported .fab and .fabtex files found in Pokemon Art Academy, by the same developer Headstrong Games. However, the files from Home Studio can't currently be opened in Kuriimu with the respective plugin; the .fab's result in blank archives and the .fabtex's give an "Unable to read beyond the end of the stream" error.

I didn't look too deeply into the technical details of either format, but it seems Home Studio's .fab files have a different header than the Pokemon ones: FABZ instead of FBRC. The rest of the file seems similar enough. The .fabtex, on the other hand, does start with FBRC so perhaps it just has some slight subtle difference elsewhere that's tripping up the plugin.

Sample files (if possible):
Sample .fab
Sample .fabtex