[SOLVED] realistic eyelashes for use with simglass hair?

Thanks orangemittens ! 
The issue is definitely with (at least) sortlayer.

Setting the eyelashes to sortlayer of 17100 puts it "behind" the hair (typically at 12000).
There is an unfortunate side effect of that but it's better than lashes showing through hair!

When the hair (this one has sort layer 12000) is in front of the face as seen below, the lashes are obscured even when no hair is in front of them, i.e. for the right eye. 


But this hair, created with sortlayer 0, from this angle shows the lashes. 


And, when viewed from the front, the lashes are visible but they become part of the eyelid except where they are aligned with the hair. 


I'm going to experiment with other parameters such as AdditionalTextureSpace and BodyType set to eyeliner, with SortLayer 5300, referencing brujah 's SortLayer post. 
I'll reply again with my findings.