I think we effectively rat-holed this into a discussion about the how specifying silver furniture relates to chargeable options for the #25. The conclusion should probably be recorded in the 'Randall "ordering" questions' thread.
The consensus seems to be gravitating toward the #25-6", though there is still the question of what material to use for the hilt, butt cap, and spacers. I suggested silver, but nickel silver and brass should also be considered.
I own three #25-6" knives, with all three hilt and butt cap combinations (brass, nickel silver, and silver):
