Jason:It is astonishing to me how complicated people can make such a simple concept.
I don't know where he's finding the wind pressure to be a strength level load, especially if you are using the Allowable Load Combinations of the building code... I would tell him that he's not following the Allowable Load combinations of the Building Code, and what he's using is not listed as an alternative load combination either...
Everything is "service level" except for earthquake. That's pretty much it.