I know we have talked about this before but thought I'd bring it up again. I can't see any reason why we can't run romex under an eve or up under a patio cover behind the studs (where it would be behind the drywall if there was drywall there) in a home, as long as it is not subject to mechanical damge or out in the weather. Especially here in AZ where its dry most of the time. Years ago back in Mich., we used run romex in unfinished residential garages and it was legal.
It could be run in UF to make it better too.
