IMNSHO, he'll do surprisingly well in Seattle ... but he'll have a somewhat limited shelf life ... Jerry thrived in the West Coast Offense, but the Raiders very limited experiment with THAT went south with Gruden, so Jerry hasn't had nearly the opportunity to show his stuff that he might otherwise have had ...
Look for Holmgren to change that ... he's a first generation West Coast protege of Bill Walsh and Jerry will be running familiar routes that will be more condusive to his skills than those the Raiders use.
Jerry will open some eyes in Seattle, but that extends past this year, it almost certainly won't go beyond 2005 ...