if you wanna change their equipment, go download the editor (listed on the Mods Discussion forum) and click "Units," then scroll around till u find sword_sister and then u can add/remove their items at the right.
I did this with vaegir & swadians.
All vaegir knights, marksmen, and guards have tree armor, guard helmet, sword of war, and iron greaves. All knights have an edited hunter.
All swadian knights, sharpshooters, and seargents have templar armor, guard helmet, sword of war, and iron greeves. All knights have an edited courser.
This way i can tell them apart easily, and it looks more like one army versus another, rather than 1 drunken mob vs. other.