Will the iPhone 4S Siri work on Wi-Fi only and without a sim card?

Will the iPhone 4S Siri work on Wi-Fi only and without a sim card?

Added (1). I'm happy with my existing phone and would use the bricked iPhone as a glorified iPod touch.

Yeah, siri will work whenever there's a Internet connection if your asking it a question which it needs the Internet to search for. Having a SIM card in your iPhone can make siri work wherever.