Off Topic but, that didn't work for me.. at least not with hair.  Any movement of the head sent verts all over the place

 >>Edit<<  seems to be an issue with weightmapping.  What you suggest works fine with standard rigging but on antonia WM it turns into a big mess of spikes.   I imagine the weights all spanning across different actors confuses the inherit bends feature.

That being said I have to agree.  the smart prop method works really well for shoes on standard rigging. Aside from the problem that Antonia has that extra instep group which means that if you have a boot that covers the shin as well you will not get any toe bend from the figure

Quote - I absolutely have no clue why anybody would want to "rig" shoes/boots.

Take a shoe, boot, position it over the foot/toe, and save it as a "smart" prop of the foot with inherit bends checked ON.

The shoe/boot will follow all movements of the shin, foot, and toe's.

A "smart" prop will follow all movements one group up and one group down.

 

Same for "smart' propping hair.
Smart prop it to the neck, and it will follow all movement of the head, neck and collars.

The group it is parented to plus; One group up, and one group down.

Why make simple things so complicated?????
KISS never fails. :-)