I tried every registering order possible and there is no way to have a staic hair element, even a HAIR_TOP one, over a DYNAMIC_HAIR_OVER[_EXTENDED] element. Your suggestion would be relevent if we were talking about 2 layers defined as the same elements (2 DYNAMIC_HAIR_OVER for example).
Faceless has given me a lead, using an erase mask in the dynamic ear lock layer's segents, referencing a property located in the static hair one. According to what he told me, he's quite confident it should work.
Your advice to use the earing accessory template is an interresting workaround, however I'm quite reluctant to do it ,as it would be more complicated for people who'd want to use moreclothing, and I'm not sure it would still be possible to use earings along with this hair.
We've been discussing this
here if you're interrested
EDIT: I just made a test to check on Faceless' lead, and see if I could make it work as he instructed me, and it's been successful. So I'm back on business
Nevertheless, thank you for trying to help
SyntaxTerror