I for one, certainly don't like the idea of having the GD switch in the same box as a light switch, Code compliant or not.
Although my wife's lived in this house for nearly 15 yrs., she or I will often turn on the GD when meaning to turn on the downlight above the sink. (They're both in a box-above-counter, within easy reach of the sink)
The possibilities scare me. [Linked Image]