As I get a little time I'll try to drop a Material file in here with the vascularity setting that you can just load your Maps into renamed nodes, would make life easy for simple users. Also thought to add a instance with a optional node giving the veins a Alien Blood look Like Glowing yellow or green. ( You will just need to use your own maps )

After checking again I could not find any Problem zones on the setup used for the superfly renders ( No negative Vein effects that is causing branding or scar effects on superfly renders )