Plastic leadscrew nuts

Some time ago there was an interesting thread regarding the leadscrew
nuts moulded from Moglice. The nuts showed a minimal or no backlash
initailly.

Is there any information available in regard to their wear after a
period in service.

Additionally, has anyone tried to use Devcon Wear Resistant Liquid or
Putty instead of Moglice?

Regards,
Zvon