Thanks for the feedback. I was planning on using the Nymph Skin as abdomen, wrapped around the shank. The material is apparently made of latex and picks up color from markers quite well. I think that either the Flexi-Skin or the Nymph Skin can be used for this purpose, just have to find an alternative material that's offered in clear and olive.
The adjesive tape is used as an alternative to winding lead around the shank, which enables a slimmer body profile if desired.
I can order the actual stuff, but just wondered if there was something just as good or better that's easily found.