usb.ids

Just curious .. is there any reason to include multiple usb.ids files?  
Right now hwdata supplies one,
kdebase supplies another, and usbutils potentially supplies another, 
though it appears to be essentially the same as what's provided by 
hwdata (hwdata's version is just missing all of the declarations at the end)

I guess the question is.. shouldn't they all be coming from the same 
place?  Looking at the diffs of the 3 files, there were some devices in 
the one provided by kdebase which were not in hwdata's, some with 
different names, and many in hwdata's which didn't exist in kdebase's.  
That just seems to BEG for problems.