From what I've seen, I'm not even sure If he Had his sword with him when he was a captain... nottttt sure about that XD;;;
Sorry if I offended you ^^;; I wasn't sure if you were male or Female, That why i put the "If" part XD;;;
Edit; I found two photo's of Urahara and his weapon
. It Appears that he Doesn't have a sheath. That Picture is ''Benihime's'' only other form beside the cane that I remember.... If you need any more help I'd be glad to help you out!