Skin looks just fine in Poser 12. I'm using EZSkin settings from ShareCG like I've posed a million times. I don't think Snarly has ezskin sorted out yet but that is totally separate from Poser development. I never settle on final settings from the script anyway and tweak each character by hand in the mats room after. If I really need to run a skin through EZSkin I'll open the file up in 11 first and do all the ezskin stuff there but most of the time I just use and existing mat I've saved and change out the textures.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740