Found the info. Thanks anyway. SkyWest says they want to keep the economies of scale within the hubs so SLC to stay SkyWest and ATL to stay ASA with aircraft flowing thru each hub but no mixed domiciles.
900's going tho ATL thru march of '07. "some" of ASA's current 700's in SLC to be flown by SkyWest is the word I've heard.
It's really too bad for the folks who moved to SLC and now may need to commute. On a positive note the company says they are working on a policy to allow for movement betweeen the two companies that is "fair and adhears to senority".