I finished up this Sith Warrior tonight.
I went for sort of a KOTOR look with the big bulky armour.
The shoulder armour is also removable.
Torso/Arms: Ice viper
Legs: Snake eyes paris pursuit
Head: Snake eyes with the visor removed
Mask: Storm Shadow (I think)
Armour: Mace windu and some 3.75" spiderman figure