I woudnt have thought they would be any worse (or better) than any other professional photolibray
its all down to the contract and things like do they resell your imags through other libraries which can see your commision being drasticaly reduced depending on the terms and things like policies on ‘similars’ etc its al in the smal print :)
I know you will hate me for suggestiing this but I did something similar to this a little while ago and what i found worked better for me was to move my lighting more to the models sides and this gave more texture to the material but also alowed some sculpting of the figure I know this woulds create a very different outcome and this was your intended result but I thought I would mention it anyway :)
no lol its the grid on one of my strobes i was trying to shoot through a mushroom and the modeling light cooked the mushroom :) leaving this scorch mark on it from the grid fitted to the reflector :) a bit mad on my part but if you dont try you dont get cocked mushooms :)