Also Jack. it doesn't have to be an aluminum skin for your plan to work, like you mentioned and asked.
HAH!!! I GOT YOU! IT WOULD STILL WORK WITH A WOOD SKIN!
For my building expertise, that's the best I can do to "catch" you in a kind of "mistake." Or mispoken, I should say.
And you know I'm screwing around here now, right? That I'm not the least bit serious?
Some people will NEVER understand my sense of humor.