You can choose starterlooks yourself by editing HUM_M.DAT or HUM_F.DAT, with notepad or something similar. It is not the same as Kva's suits though, that is more advanced item and wardrobe modding.
Example for male engineer:
1. open “mod\media\units\players\ENGINEER\HUM_M.DAT”
2. edit these lines:
<STRING>SHOULDERS_OVERRIDE:ENGINEER_05_SHOULDERS <STRING>GLOVES_OVERRIDE:ENGINEER_05_GLOVES <STRING>PANTS_OVERRIDE:ENGINEER_05_PANTS <STRING>BOOTS_OVERRIDE:ENGINEER_05_BOOTS <STRING>CHEST_OVERRIDE:ENGINEER_05_CHEST
Helmet is also possible but then you will never see the characters face. Helm toggle does not work, I tried.