Nintendo "Zapper Style" shell for Wii Remote

Looks like Nintendo didn't show us everything they're working on for the Wii yesterday. Safely ensconced under glass in Nintendo's booth is this little toy, a prototype "Zapper Style" shell for the Wii Remote. Needless to say, something like this will go a long way to adding some verisimilitude to certain games, or, as the Nintendo brass like to say, it's all about the feeling. Wonder if there's any recoil on this thing?