Do you envision any practical use for OS 7.5.5 on a watch, or is porting it little more than an exercise?
I see it as an interesting exercise demonstrating how powerful the Apple Watch really is. The fact the Watch can run a PowerPC emulator and OS 7.5 at a reasonable speed is pretty impressive. As my grandson said when referring to the Apple Watch he got for graduation, "
You could launch a space shuttle with this thing."