It a metal shroud and 2 pieces of rubber wrapped around the carb, Of course finding the fuel shutoff is strictly a fumble and feel operation as it is completely covered by rubber
Yup. What you describe comes standard on the 928. They call the metal shroud 'carburetor cover' even though it covers more than just the carb. As for the rubber wrap-around it has a slit for access to the shutoff valve but it doesn't align that good that's why you need to slide your fingers in there and feel for the lever. Does a pretty good job of keeping snow out though.
Honda HS928 TCD - If you lived where I live you'd have one too