We like the the inside shower/toilet set up in the EC. We did have the large outside shower fitted. We have made modifications to the outside shower curtain to make it a true outside cubicle. Tags and elastic guy lines around the bottom and Velcro down the door so that it can be closed.
Probably would not be good in strong wind. I have even put a pop up pooper in there in case I feel the need to sit on the thrown and contemplate the world for an hour or two.
BowmansOverlanding 