Milandro, I have used the method shown in the second video with some success, although I was looking for a finish that was not as bright as Sajens restorer has gotten. I was looking for a more subdued shine.
https://www.youtube.com/watch?v=gGTZt_6T9vw
I used clear shellac thinned down with grain alcohol to about the consistency of water. Leftover Grain alcohol is saved for making Glogg or extracts.
There is really no grain to be highlighted on this scabbard, and I can't remember how many applications I did; it was probably 10 at least.