You know, I wasn't really all that up for it, but architect drew it, demanded it, signed off liability for it, so I put a WP sconce at 6' high in a tub/shower once. Fed it like this- gfi circuit breaker fed a gfi receptacle outlet in the bathroom, then I wired the light switch and light off the load side of that receptacle outlet, giving double gfi protection for fail secure. Other lighting in that bathroom had another circuit feeding it. I hammered the homeowner's over and over about the importance of testing those gfi's each month, but I bet they never did....