Yeah, condoms actually have a LOT of military usage, mostly revolving around protection of delicate parts (gun barrels, etc.) or storage of perishables or contaminables (pure water being the most common, although a combat medic I know has used them for containment of biohazards when nothing else was available).
On a separate note, would densiplast knuckle gloves (the things Rory equips on page 13) even hold up under her strength?