Snow Gorget is probably your best start. It covers Yukikaze, Gekko, and Rana. If you have the time, you can finish off all your major WS' with a Shadow Gorget that covers Kasha and Penta Thrust. If you're not using spellcast, you'd have to make 2 different WS macro script depending on what you're going to use in order to have the right gorget on.
Edited, Nov 18th 2009 5:41pm by Dudester
Back before I used spellcast I'd only have one WS gear script for SAM, and just add the appropriate gorget in the in-game macros, i.e.:
/equip neck "Snow Gorget"
/ws "Tachi: Gekko" <t>