Like for example your wallet, phone, watch etc? I'm pretty sure as a Sandie, we can always tuck things into our backpack, pouches or inside the chest piece!
Reason I'm asking is because sometimes I don't trust the storage area where our luggage are kept. It may not be locked up all the time and can be also shared by other costumers so I always carry my personal stuff with me when in armour. (OK I admit to buying drinks occasionally when the weather gets too hot!)