I think if the machine’s interior is accessible and able to be disinfected properly, it’s not a problem. The Stylus is a good example. Grips are autoclaved, one screw to pull the motor off the body and the body is autoclaved. Interior is wiped down with Madacide and slap it back together. I’ve never understood to logic (or lack of) of wrapping and wiping the grip and calling it good. That would never fly with standard grips.