A very good friend of mine says installing a non self grounding switch in the following manner is ok, I say it is not. There is a metal gem box in a sheetrocked wall, it's recessed the typical amount so the yoke does not contact the box. Again, I don't see this as a compliant install but he's been doing this longer than I have. Also while were at it, another good friend of mine says it's ok to sleeve MC in emt and attach the MC to the emt via a romex to emt "From to". I don't like it but we did it anyway, just like the switch above. Any thoughts?