I guess I raised the question because I don't know any better and I couldn't tell you what is the tried and true methods and what is experimentation. A search on covering fabric will lead you to a plethera of different methods and materials with each poster claiming his way is best.
Chip_Mull, you do make a good point about sticking with tried and true systems, especially for a new kit builder like me, but I think everyone will agree that originally someone had to experiment in order to develop these tried and true systems.
Anyways, I will likely buy Sig's Butyrate Dope products for the koverall. I can talk to them if something goes wrong and I know they will all be compatible.